Fix typos and improve wording in README.md

[Trynocs]

Summary

Validation

• Pointer branding is preserved.
• TypeScript or build checks were run for touched areas.
• Relevant tests were run, or the reason they were skipped is documented.
• No generated artifacts, secrets, tokens, or local tool files are included.
• Release/docs changes are included when commands, artifacts, or product metadata changed.

(idk what copilot is cooking here with the summary i changed some readme stuff :3)