Fix dead external links

[jethron]

Per #2881, fixes some broken external links on https://graphite.readthedocs.io/en/latest/tools.html

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.42%. Comparing base (3020e45) to head (a92541b).
Report is 34 commits behind head on master.

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2884      +/-   ##
==========================================
+ Coverage   76.26%   76.42%   +0.15%     
==========================================
  Files          88       88              
  Lines        9688     9688              
  Branches     1971     1802     -169     
==========================================
+ Hits         7389     7404      +15     
+ Misses       2031     2024       -7     
+ Partials      268      260       -8     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.