Fixing formatting of documentation repo link

[AinaMerch]

Proposed Changes

Fixing formatting of documentation repository link in PR template
...

Screenshots of your changes (if applicable)

Associated [documentation repository](https://github.com/MarkUsProject/Wiki) pull request (if applicable)

Type of Change

(Write an X or a brief description next to the type or types that best describe your changes.)

Type	Applies?
🚨 Breaking change (fix or feature that would cause existing functionality to change)
✨ New feature (non-breaking change that adds functionality)
🐛 Bug fix (non-breaking change that fixes an issue)	X
🎨 User interface change (change to user interface; provide screenshots)
♻️ Refactoring (internal change to codebase, without changing functionality)
🚦 Test update (change that only adds or modifies tests)
📦 Dependency update (change that updates a dependency)
🔧 Internal (change that only affects developers or continuous integration)

Checklist

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Before opening your pull request:

• I have performed a self-review of my changes.
  • Check that all changed files included in this pull request are intentional changes.
  • Check that all changes are relevant to the purpose of this pull request, as described above.
• I have added tests for my changes, if applicable.
  • This is required for all bug fixes and new features.
• I have updated the project documentation, if applicable.
  • This is required for new features.
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After opening your pull request:

• I have updated the project Changelog (this is required for all changes).
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Questions and Comments

(Include any questions or comments you have regarding your changes.)

[david-yz-liu]

@AinaMerch in addition to the inline comment I made, you should indeed update the changelog

[david-yz-liu]

@AinaMerch sorry I missed this the first time, but anything relating to the PR template is an "Internal change" (even if it fixes a "bug", it's not a user-facing bug)

[coveralls]

Pull Request Test Coverage Report for Build 9719490182

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 91.396%

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Totals
Change from base Build 9689379709:	0.0%
Covered Lines:	40103
Relevant Lines:	43198

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💛 - Coveralls