[#1958] Use syntax coloring for code blocks in docs

docs/dg/learningBasics.md

@@ -82,13 +82,13 @@ Here are some small tasks for you to gain some basic knowledge of the code relat
 
  Therefore, the first step you can take is to add the following to `ArgsParser`.
 
- ```
+ ```java
  public static final String[] JSON_PRINT_MODE_FLAGS = new String[]{"--use-json-pretty-printing", "-j"};
  ```
 
  In `getArgumentParser` method, add the following content to make `ArgumentParser` capture the new argument.
 
- ```
+ ```java
  parser.addArgument(JSON_PRINT_MODE_FLAGS)
  .dest(JSON_PRINT_MODE_FLAGS[0])
  .action(Arguments.storeTrue())
@@ -102,7 +102,7 @@ Here are some small tasks for you to gain some basic knowledge of the code relat
 
  1. Add the following content to `CliArguments` to include `isPrettyPrintingUsed` as a new attribute to the class.
 
- ```
+ ```java
  protected boolean isPrettyPrintingUsed;
 
  public boolean isPrettyPrintingUsed() {
@@ -112,13 +112,13 @@ Here are some small tasks for you to gain some basic knowledge of the code relat
 
  2. In the constructor of `ConfigCliArguments`, add `isPrettyPrintingUsed` as a new parameter of the method, and add the following instruction to the method body.
 
- ```
+ ```java
  this.isPrettyPrintingUsed = isPrettyPrintingUsed;
  ```
 
  3. In the `parse` method of `ArgsParser`, add the following instruction to get `isJsonPrettyPrintingUsed` from `ArgmentParser`.
 
- ```
+ ```java
  boolean isJsonPrettyPrintingUsed = results.get(JSON_PRINT_MODE_FLAGS[0]);
  ```
 
@@ -139,13 +139,13 @@ Here are some small tasks for you to gain some basic knowledge of the code relat
 
  2. Add the following content to `FileUtil`.
 
- ```
+ ```java
  private static boolean isPrettyPrintingUsed = false;
  ```
 
  3. In the `writeJsonFile` method, Replace the creation of the `Gson` object with the following instructions.
 
- ```
+ ```java
  GsonBuilder gsonBuilder = new GsonBuilder()
  .registerTypeAdapter(LocalDateTime.class, (JsonSerializer<LocalDateTime>) (date, typeOfSrc, context)
  -> new JsonPrimitive(date.format(DateTimeFormatter.ofPattern(GITHUB_API_DATE_FORMAT))))
@@ -160,15 +160,15 @@ Here are some small tasks for you to gain some basic knowledge of the code relat
 
  4. To notify `FileUtil` of the switch between different printing mode, add the following method to `FileUtil`.
 
- ```
+ ```java
  public static void setPrettyPrintingMode(boolean isPrettyPrintingAdopted) {
  isPrettyPrintingUsed = isPrettyPrintingAdopted;
  }
  ```
 
  5. It is now possible to notify `FileUtil` of the printing mode switch by extracting the argument from the `CliArguments` object in the `main` method of `RepoSense.java` and passing it to the corresponding method in `FileUtil`.
 
- ```
+ ```java
  FileUtil.setPrettyPrintingMode(cliArguments.isPrettyPrintingUsed());
  ```
 
@@ -225,7 +225,7 @@ Here are some small tasks for you to gain some basic knowledge of the code relat
 
  Add this to the catch block of `spawnCloneProcess` and `waitForCloneProcess`, so that the message will be captured in `summary.json`.
 
- ```
+ ```java
  ErrorSummary.getInstance().addErrorMessage(config.getDisplayName(), e.getMessage());
  ```
  </panel>
@@ -358,7 +358,7 @@ Here are some small tasks for you to gain some basic knowledge of the code relat
 
  Add this to `c_summary.scss`.
 
- ```
+ ```css
  .active-text {
  color: mui-color('green');
  }

docs/dg/styleGuides.md

@@ -22,7 +22,7 @@ Our coding standards are mostly based on those at [se-education.org/guides](http
 
 ## Note on Ternary Operators:
 Ternary operators can be used to shorten if-else blocks such as this:
-```
+```java
 LocalDateTime min = ARBITRARY_FIRST_COMMIT_DATE_UTC.withZoneSameInstant(zoneId).toLocalDateTime();
 if (!commitInfos.isEmpty()) {
  min = commitInfos.get(0).getTime();
@@ -31,7 +31,7 @@ return min;
 ```
 
 The result would look something like this:
-```
+```java
 return (commitInfos.isEmpty())
  ? ARBITRARY_FIRST_COMMIT_DATE_UTC.withZoneSameInstant(zoneId).toLocalDateTime()
  : commitInfos.get(0).getTime();
@@ -48,16 +48,16 @@ In addition to what has been mentioned in the [**Java** coding standard (SE-EDU)
  * This is not necessary (although still recommended) for methods with `@Override` annotations if Javadoc is used. However, if the method that is being overriden is part of your code and has Javadoc, all parameters must be described.
 
 Negative Examples:
-```
-Not okay (Only mentions zoneId parameter):
+```java
+// Not okay (Only mentions zoneId parameter):
 /**
  * Returns a {@link LocalDateTime} object adjusted for timezone given by {@code zoneId}.
  */
 public LocalDateTime adjustTimeZone(LocalDateTime sinceDate, ZoneId zoneId) {
  //Code here
 }
 
-Not okay (@param tag used only for zoneId)
+// Not okay (@param tag used only for zoneId)
 /**
  * Returns a {@link LocalDateTime} object by adjusting {@code sinceDate}
  * to the timezone given by {@code zoneId}.
@@ -69,8 +69,8 @@ public LocalDateTime adjustTimeZone(LocalDateTime sinceDate, ZoneId zoneId) {
 }
 ```
 Positive Example #1:
-```
-Okay (No @param tags):
+```java
+// Okay (No @param tags):
 /**
  * Returns a {@link LocalDateTime} object by adjusting {@code sinceDate}
  * to the timezone given by {@code zoneId}.
@@ -80,8 +80,8 @@ public LocalDateTime adjustTimeZone(LocalDateTime sinceDate, ZoneId zoneId) {
 }
 ```
 Positive Example #2:
-```
-Okay (@param tags used for all inputs):
+```java
+// Okay (@param tags used for all inputs):
 /**
  * Returns a {@link LocalDateTime} object by adjusting {@code sinceDate}
  * to the timezone given by {@code zoneId}.
@@ -98,8 +98,8 @@ public LocalDateTime adjustTimeZone(LocalDateTime sinceDate, ZoneId zoneId) {
  * This requirement does not apply to test code.
  * One `@throws` tag per unique exception.
  * The order of exceptions in the `@throws` tag block should match that of the method's `throws` statement.
-```
-Not okay (order of exceptions in tag block and method signature do not match):
+```java
+// Not okay (order of exceptions in tag block and method signature do not match):
 /**
  * Returns a {@link LocalDateTime} object from {@code dateString}.
  *
@@ -111,7 +111,7 @@ public LocalDateTime parseDate(String dateString) throws NullPointerException, P
  // Code here
 }
 
-Should be:
+// Should be:
 /**
  * Returns a {@link LocalDateTime} object from {@code dateString}.
  *

docs/ug/configFiles.md

@@ -190,15 +190,15 @@ Date: Fri Feb 9 19:13:13 2018 +0800
 ```
 `ActualGitHostId` and `ConfiguredAuthorName` are both `Git Author Name` of the same author.<br>
 To find the author name that you are currently using for your current git repository, run the following command within your git repository:
-``` {.no-line-numbers}
+``` shell {.no-line-numbers}
 git config user.name
 ```
 To set the author name to the value you want (e.g., to set it to your GitHub username) for your current git repository, you can use the following command ([more info](https://www.git-tower.com/learn/git/faq/change-author-name-email)):
-``` {.no-line-numbers}
+``` shell {.no-line-numbers}
 git config user.name "YOUR_AUTHOR_NAME”
 ```
 To set the author name to use a default value you want for future git repositories, you can use the following command:
-``` {.no-line-numbers}
+``` shell {.no-line-numbers}
 git config --global user.name "YOUR_AUTHOR_NAME”
 ```
 RepoSense expects the Git Author Name to be the same as author's username on the Git hosting platform (GitHub, GitLab, BitBucket). If an author's `Git Author Name` is different from their username on the Git hosting platform, the `Git Author Name` needs to be specified in the standalone config file. If the author has more than one `Git Author Name`, multiple values can be entered too.