Update context to Context in the docs where appropriate

src/content/learn/keeping-components-pure.md

@@ -149,7 +149,7 @@ In general, you should not expect your components to be rendered in any particul
 
 #### Detecting impure calculations with StrictMode {/*detecting-impure-calculations-with-strict-mode*/}
 
-Although you might not have used them all yet, in React there are three kinds of inputs that you can read while rendering: [props](/learn/passing-props-to-a-component), [state](/learn/state-a-components-memory), and [context.](/learn/passing-data-deeply-with-context) You should always treat these inputs as read-only.
+Although you might not have used them all yet, in React there are three kinds of inputs that you can read while rendering: [props](/learn/passing-props-to-a-component), [state](/learn/state-a-components-memory), and [Context.](/learn/passing-data-deeply-with-context) You should always treat these inputs as read-only.
 
 When you want to *change* something in response to user input, you should [set state](/learn/state-a-components-memory) instead of writing to a variable. You should never change preexisting variables or objects while your component is rendering.
 
@@ -219,7 +219,7 @@ Every new React feature we're building takes advantage of purity. From data fetc
  * **It minds its own business.** It should not change any objects or variables that existed before rendering.
  * **Same inputs, same output.** Given the same inputs, a component should always return the same JSX. 
 * Rendering can happen at any time, so components should not depend on each others' rendering sequence.
-* You should not mutate any of the inputs that your components use for rendering. That includes props, state, and context. To update the screen, ["set" state](/learn/state-a-components-memory) instead of mutating preexisting objects.
+* You should not mutate any of the inputs that your components use for rendering. That includes props, state, and Context. To update the screen, ["set" state](/learn/state-a-components-memory) instead of mutating preexisting objects.
 * Strive to express your component's logic in the JSX you return. When you need to "change things", you'll usually want to do it in an event handler. As a last resort, you can `useEffect`.
 * Writing pure functions takes a bit of practice, but it unlocks the power of React's paradigm.
 

src/content/learn/lifecycle-of-reactive-effects.md

@@ -554,7 +554,7 @@ However, if you [think from the Effect's perspective,](#thinking-from-the-effect
 
 Props and state aren't the only reactive values. Values that you calculate from them are also reactive. If the props or state change, your component will re-render, and the values calculated from them will also change. This is why all variables from the component body used by the Effect should be in the Effect dependency list.
 
-Let's say that the user can pick a chat server in the dropdown, but they can also configure a default server in settings. Suppose you've already put the settings state in a [context](/learn/scaling-up-with-reducer-and-context) so you read the `settings` from that context. Now you calculate the `serverUrl` based on the selected server from props and the default server:
+Let's say that the user can pick a chat server in the dropdown, but they can also configure a default server in settings. Suppose you've already put the settings state in a [Context](/learn/scaling-up-with-reducer-and-context) so you read the `settings` from that Context. Now you calculate the `serverUrl` based on the selected server from props and the default server:
 
 ```js {3,5,10}
 function ChatRoom({ roomId, selectedServerUrl }) { // roomId is reactive

src/content/learn/managing-state.md

@@ -697,11 +697,11 @@ Read **[Extracting State Logic into a Reducer](/learn/extracting-state-logic-int
 
 </LearnMore>
 
-## Passing data deeply with context {/*passing-data-deeply-with-context*/}
+## Passing data deeply with Context {/*passing-data-deeply-with-context*/}
 
 Usually, you will pass information from a parent component to a child component via props. But passing props can become inconvenient if you need to pass some prop through many components, or if many components need the same information. Context lets the parent component make some information available to any component in the tree below it—no matter how deep it is—without passing it explicitly through props.
 
-Here, the `Heading` component determines its heading level by "asking" the closest `Section` for its level. Each `Section` tracks its own level by asking the parent `Section` and adding one to it. Every `Section` provides information to all components below it without passing props--it does that through context.
+Here, the `Heading` component determines its heading level by "asking" the closest `Section` for its level. Each `Section` tracks its own level by asking the parent `Section` and adding one to it. Every `Section` provides information to all components below it without passing props--it does that through Context.
 
 <Sandpack>
 
@@ -795,15 +795,15 @@ export const LevelContext = createContext(0);
 
 <LearnMore path="/learn/passing-data-deeply-with-context">
 
-Read **[Passing Data Deeply with Context](/learn/passing-data-deeply-with-context)** to learn about using context as an alternative to passing props.
+Read **[Passing Data Deeply with Context](/learn/passing-data-deeply-with-context)** to learn about using Context as an alternative to passing props.
 
 </LearnMore>
 
-## Scaling up with reducer and context {/*scaling-up-with-reducer-and-context*/}
+## Scaling up with reducer and Context {/*scaling-up-with-reducer-and-context*/}
 
-Reducers let you consolidate a component’s state update logic. Context lets you pass information deep down to other components. You can combine reducers and context together to manage state of a complex screen.
+Reducers let you consolidate a component’s state update logic. Context lets you pass information deep down to other components. You can combine reducers and Context together to manage state of a complex screen.
 
-With this approach, a parent component with complex state manages it with a reducer. Other components anywhere deep in the tree can read its state via context. They can also dispatch actions to update that state.
+With this approach, a parent component with complex state manages it with a reducer. Other components anywhere deep in the tree can read its state via Context. They can also dispatch actions to update that state.
 
 <Sandpack>