docs: update guidelines.md (#1755)

# Description

Github -> GitHub

## Checklist before requesting a review

Please delete options that are not relevant.

- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my code
- [ ] I have commented hard-to-understand areas
- [ ] I have ideally added tests that prove my fix is effective or that
my feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged

## Screenshots (if appropriate):

docs/docs/Developers/contribution/guidelines.md

@@ -7,12 +7,12 @@ title: Guidelines
 
 Thanks for your interest in contributing to Quivr! Here you'll find guidelines for contributing and steps on how you can contribute.
 
-### Repo: [Quivr Github](https://github.com/stanGirard/quivr)
+### Repo: [Quivr GitHub](https://github.com/stanGirard/quivr)
 
 ## Table of Contents
 
 - [Contributing to Quivr](#contributing-to-quivr)
-    - [Repo: Quivr Github](#repo-quivr-github)
+    - [Repo: Quivr GitHub](#repo-quivr-github)
   - [Table of Contents](#table-of-contents)
   - [Community](#community)
   - [Roadmap and Issues](#roadmap-and-issues)