docs: clean up requirements

[jsjoeio]

Originally opened by @BelphegorPrime in #5375

Fixes #5374

[github-actions]

✨ code-server docs for PR #5428 is ready! It will be updated on every commit.

• Host: https://coder.com/docs/code-server/a5cc03d
• Last deploy status: success
• Commit: d29b0ed
• Workflow status: https://github.com/coder/code-server/actions/runs/2827150695

[github-actions]

✨ code-server dev build published to npm for PR #5428!

• Last publish status: success
• Commit: d29b0ed

To install in a local project, run:

npm install @coder/code-server-pr@5428

To install globally, run:

npm install -g @coder/code-server-pr@5428

[codecov]

Codecov Report

Merging #5428 (d29b0ed) into main (45e222b) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #5428   +/-   ##
=======================================
  Coverage   72.42%   72.42%           
=======================================
  Files          30       30           
  Lines        1672     1672           
  Branches      366      366           
=======================================
  Hits         1211     1211           
  Misses        398      398           
  Partials       63       63           

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