fix: removed redundant 'open in new tab' icons from links in footer

[SatyamSetia]

Describe your changes

Footer links like "Become a contributor" and "Support us" are supposed to open in same tab. But current production version have open in new tab icon beside them which is misleading. This PR includes the changes to remove these icons from these 2 links

Screenshots - If Any (Optional)

Before -

After -

Link to issue

Closes #341

Checklist before requesting a review

• [x] I have performed a self-review of my code.
• [x] Followed the repository's Contributing Guidelines.
• [x] I ran the app and tested it locally to verify that it works as expected.
• [x] I have checked my code with an automatic accessibility tool such as Axe Dev Tools or Wave and it shows no errors.

[github-actions[bot]]

Hello @SatyamSetia, thanks for raising a pull request in this project. The maintainers of this project are volunteers so please be understanding if it takes time before you get a response. We still appreciate your help with creating pull requests!

[SatyamSetia]

Hey, @EmmaDawsonDev Looking forward to get your review on this PR.