Updated Manual (markdown)

Manual.md

@@ -11,7 +11,7 @@ to build the project, I recommend hosting the website via nginx via the nginx co
 ```sh
 npm run dev
 ```
-to run without building (not recommended). To start the connection websocket, go to the "src/backend" directory and run the following command:
+to run without building (not recommended). To start the connection websocket, go to the `src/backend` directory and run the following command:
 ```sh
 node starter.cjs
 ```