Update HACKTOBERFEST.md

Improved the HACKTOBERFEST.md file.
Fixed and added 7 links.

HACKTOBERFEST.md

@@ -17,14 +17,14 @@ Familiarize yourself with the current contributions and our [Roadmap](https://gi
 Deciding to contribute with code? Here are some insights based on the area of your interest:
 
 - Frontend (⚛️React, Vite):
-    - Most of the code is located in `/frontend` folder. You can also check out our React extension in /extensions/react-widget.
+    - Most of the code is located in [/frontend](https://github.com/arc53/DocsGPT/tree/main/frontend) folder. You can also check out our React extension in [/extensions/react-widget](https://github.com/arc53/DocsGPT/tree/main/extensions/react-widget).
     - For design references, here's the [Figma](https://www.figma.com/file/OXLtrl1EAy885to6S69554/DocsGPT?node-id=0%3A1&t=hjWVuxRg9yi5YkJ9-1).
     - Ensure you adhere to the established guidelines.
 
 - Backend (🐍Python):
-    - Focus on `/application` or `/scripts`. However, avoid the files ingest_rst.py and ingest_rst_sphinx.py, as they will soon be deprecated.
+    - Focus on [/application](https://github.com/arc53/DocsGPT/tree/main/application) or [/scripts](https://github.com/arc53/DocsGPT/tree/main/scripts). However, avoid the files [ingest_rst.py](https://github.com/arc53/DocsGPT/blob/main/scripts/old/ingest_rst.py) and [ingest_rst_sphinx.py](https://github.com/arc53/DocsGPT/blob/main/scripts/old/ingest_rst_sphinx.py), as they will soon be deprecated.
     - Newly added code should come with relevant unit tests (pytest).
-    - Refer to the `/tests` folder for test suites.
+    - Refer to the [/tests](https://github.com/arc53/DocsGPT/tree/main/tests) folder for test suites.
 
 Check out our [Contributing Guidelines](https://github.com/arc53/DocsGPT/blob/main/CONTRIBUTING.md)