docs: fix SOCKS proxy setup wording

[Rohan5commit]

Summary

• fix two small wording issues in the SOCKS proxy setup section

Related issue

• N/A (trivial docs-only fix)

Guideline alignment

• followed the repository PR template in .github/PULL_REQUEST_TEMPLATE.md
• kept the change to a single file and a single docs-only topic
• the template notes that prior discussion does not apply to typo fixes

Validation

• not run (docs-only change)

Checklist

• I understand that this PR may be closed in case there was no previous discussion. (This doesn't apply to typos!)
• I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
• I've updated the documentation accordingly.