Fix docs links in notes

[sjberman]

Problem: Internal docs links within notes aren't working properly.

Solution: Adjusted these links so they redirect properly.

Closes #1150

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

[bjee19]

Should be one more fix here: https://github.com/nginxinc/nginx-gateway-fabric/blob/main/docs/developer/quickstart.md?plain=1#L101

[bjee19]

Lastly, do you think we need to do anything with Github support to prevent this in the future / be able to have internal links work properly or do we just need to adjust how we implement internal links in Note/Quotes.

[sjberman]

@bjee19 Internal links can be weird regardless, so I think we just need to pay close attention to whether or not our links work. Hopefully something comes out of the discussion linked in the ticket though.