feat: redirect tools version metadata in reference to docs site

[zimeg]

Summary

This PR updates the link to tools metadata to be directed at WIP pages on the docs.slack.dev site!

Requirements

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.

[zimeg]

🗣️ Looks like our installation tests are failing as expected for now! I'll mark this as draft until the updated metadata goes live.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 64.59%. Comparing base (d1b2eed) to head (27c6464).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #269   +/-   ##
=======================================
  Coverage   64.59%   64.59%           
=======================================
  Files         212      212           
  Lines       17505    17505           
=======================================
+ Hits        11307    11308    +1     
- Misses       5132     5133    +1     
+ Partials     1066     1064    -2     

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[lukegalbraithrussell]

https://docs.slack.dev/tools/metadata.json is live and tests are passing now!