update Go documentation link

[junefish]

Problem

Existing link was moved https://github.com/golang/go/wiki/Modules

Solution

Changed to current link

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• Infrastructure change (CI configs, etc)
• Non-code change (docs, etc)
• None of the above: (explain here)

Test Plan

N/A

[aulorbe]

TY!

[aulorbe]

Great change! Let's wait until @austin-denoble gets back to merge, since CI is failing due to a missing API key (which is strange b/c it should be all set in GH). Hold tight!

[aulorbe]

Update: figured it out. The fork made for this request does not contain the necessary CI secrets. Author will open a branch (not a fork) and re-issue this PR.