Fix readme

README.md

@@ -1,6 +1,4 @@
-<p align="center">
- <img src="https://raw.githubusercontent.com/cheap-glitch/warpgate/master/docs/banner.png" alt="Banner of the project.">
-</p>
+<p align="center"><img src="./docs/banner.png" alt="Banner of the project."></p>
 
 <div align="center">
  <img src="https://badgen.net/github/license/cheap-glitch/warpgate" alt="Green badge displaying the license (MPL 2.0).">
@@ -48,7 +46,7 @@ update themselves when you unstar a repo or star a new one.
 Enter the prefix `@` in the address bar, followed by a space and the search
 string. Warpgate will suggest matching targets based on your settings.
 
-![usage demo](https://raw.githubusercontent.com/cheap-glitch/warpgate/master/docs/demo.gif)
+![usage demo](./docs/demo.gif)
 
 The warp targets are updated every 10 minutes, but if for some reason you want
 an immediate refresh, press `Alt + W` on your keyboard.