Apply suggestions from code review

Co-authored-by: James M Snell <jasnell@gmail.com>
Co-authored-by: Trivikram Kamat <16024985+trivikr@users.noreply.github.com>

Author: 3 people

doc/contributing/ai-guidelines.md

@@ -19,13 +19,14 @@ never be "I'm not sure. The AI did it."
 If AI tools assisted in generating a contribution, acknowledge that honestly.
 Regardless of how much code is generated by AI, disclosure does not serve
 as a disclaimer of responsibility.
+
 The contributor remains the sole author and bears full responsibility for every line.
 If the disclosure involves trademarks or commercial brands, it's recommended to
 anonymize it in the commit message or only mention the brand/trademark in the
 PR description, but not in the commit message, unless the context would not
 have made sense without mentioning the specific brand/trademark. The goal
-is to prevent the commit messages, which are part of the code base, from being
-abused for for-profit marketing.
+is to prevent the commit messages, which are part of the codebase, from being
+abused for profit-driven marketing.
 
 Pull requests that contain AI-generated code the contributor has not
 personally understood, tested, and verified waste collaborator time and
@@ -78,7 +79,7 @@ When using AI as a coding assistant:
 * **Do not use AI to claim "good first issue" tasks.** These issues exist to
   help new contributors learn the codebase and processes hands-on.
 
-* **Edit generated comments critically.** LLM-produced comments are often
+* **Edit generated comments critically.** LLM-generated comments are often
   verbose or inaccurate. Remove comments that simply restate what the code
   does; add comments only where the logic is non-obvious.