🎨 Remove quotes and rename sessions in describe

[sunnyosun]

• Internal features → Dataset features
• External features → Linked features

Before	After

See follow-up PR:

• ✏️ Fix typos in describe sections #2271

See related discussion:

• https://github.com/laminlabs/laminhub/pull/1669

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.89%. Comparing base (4c27162) to head (72de555).
Report is 10 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2259      +/-   ##
==========================================
+ Coverage   92.71%   92.89%   +0.18%     
==========================================
  Files          55       55              
  Lines        6947     7167     +220     
==========================================
+ Hits         6441     6658     +217     
- Misses        506      509       +3     

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[github-actions]

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