chore: update --help for disable-file-downloads

[jsjoeio]

Fixes N/A

[github-actions]

✨ code-server docs for PR #5176 is ready! It will be updated on every commit.

• Host: https://coder.com/docs/code-server/9f615e1
• Last deploy status: success
• Commit: a1bb9bd
• Workflow status: https://github.com/coder/code-server/actions/runs/2284395005

[codecov]

Codecov Report

Merging #5176 (a1bb9bd) into main (60dd8ab) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #5176   +/-   ##
=======================================
  Coverage   71.73%   71.73%           
=======================================
  Files          30       30           
  Lines        1691     1691           
  Branches      375      375           
=======================================
  Hits         1213     1213           
  Misses        409      409           
  Partials       69       69           

Impacted Files	Coverage Δ
src/node/cli.ts	91.66% <ø> (ø)

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[github-actions]

✨ code-server dev build published to npm for PR #5176!

• Last publish status: success
• Commit: a1bb9bd

To install in a local project, run:

npm install @coder/code-server-pr@5176

To install globally, run:

npm install -g @coder/code-server-pr@5176