Clarify document vs implement skill descriptions to route docs tasks correctly

Co-authored-by: afranken <763000+afranken@users.noreply.github.com>

Author: Copilot

.claude/skills/document/SKILL.md

@@ -1,6 +1,6 @@
 ---
 name: document
-description: Generate or update project documentation. Use when asked to document code, create docs, or explain features.
+description: Generate or update project documentation. Use when asked to document code, create docs, explain features, or fix formatting, wording, or style in existing documentation files.
 ---
 
 # Documentation Skill — S3Mock

.claude/skills/implement/SKILL.md

@@ -1,6 +1,6 @@
 ---
 name: implement
-description: Implement features, fix bugs, or refactor code. Use when asked to add functionality, modify code, or improve structure.
+description: Implement features, fix bugs, or refactor source code. Use when asked to add functionality, modify source code, or improve code structure. Not for documentation-only changes.
 ---
 
 # Implementation Skill — S3Mock