docs: fix typos and wording in npm

[jsjoeio]

This PR fixes some typos/wording introduced in #4032

[jawnsy]

my bad, I didn't see auto merge was on!

[codecov]

Codecov Report

Merging #4037 (da4ad95) into main (1284aa3) will not change coverage.
The diff coverage is n/a.

❗ Current head da4ad95 differs from pull request most recent head fa6e86d. Consider uploading reports for the commit fa6e86d to get more accurate results

@@           Coverage Diff           @@
##             main    #4037   +/-   ##
=======================================
  Coverage   63.51%   63.51%           
=======================================
  Files          36       36           
  Lines        1872     1872           
  Branches      379      379           
=======================================
  Hits         1189     1189           
  Misses        580      580           
  Partials      103      103           

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[github-actions]

✨ Coder.com for PR #4037 deployed! It will be updated on every commit.

• Host: https://codercom-g0m457l3g-codercom.vercel.app/docs/code-server
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• Commit: fa6e86d
• Workflow status: https://github.com/cdr/code-server/actions/runs/1164548733

[jsjoeio]

no no, not your fault! no worries at all!