Provide link to `/src` from Inspector

[taylordowns2000]

Validation Steps

View adaptor docs for adaptors without any docs:

View adaptor docs for adaptors with docs:

Notes for the reviewer

@josephjclark , documentation is getting better every day, but in my typically workflow I still almost always go to the source. There's something nice and soothing about knowing exactly what this thing I'm about to call really is. What do you think?

Review checklist

• [x] I have performed a self-review of my code
• [x] I have verified that all appropriate authorization policies (:owner, :admin, :editor, :viewer) have been implemented and tested
• [x] If needed, I have updated the changelog
• [x] Product has QA'd this feature

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 89.68%. Comparing base (269b7d4) to head (9a1bb3d).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #2218 +/- ## ======================================= Coverage 89.68% 89.68% ======================================= Files 275 275 Lines 9055 9055 ======================================= Hits 8121 8121 Misses 934 934 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[josephjclark]

@taylordowns2000 how about we just ALWAYS render the "you can check the external docs HERE" line at the top of the the docs.

Then if we have docs, we'll render them, if not we'll show an error message