Adding issue number in template

[KerinPithawala]

What is the change?

Fixes: #39

What does it fix/add?

Addition of feature in PR template

How was it tested?

Using VSCode editor

Submissions guide:

• [ Y] Have you followed the Contribution guide?
• [ Y] Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Have you made corresponding changes to the documentation?
• [Y ] Your submission doesn't break any existing feature.
• Have you lint your code locally prior to submission?

Screenshots (if appropriate):

[vercel]

This pull request is being automatically deployed with Vercel (learn more).
To see the status of your deployment, click below or on the icon next to each commit.

🔍 Inspect: https://vercel.com/fireblaze/anyxz/felmyqda8
✅ Preview: https://anyxz-git-enhancement.fireblaze.vercel.app