docs: Remove secret reference from documentation

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Co-Authored-By: Claude <noreply@anthropic.com>

Author: tosin2013

.pre-commit-setup.md

@@ -50,7 +50,7 @@ This document summarizes the pre-commit configuration and security measures impl
 
 1. **Secret Detection Issue**:
    - Fixed Twilio Account SID in `tests/utils/tree-sitter-analyzer.test.ts:781`
-   - Replaced problematic test string with safe placeholder pattern
+   - Replaced test credentials with safe placeholder patterns
 
 2. **Security Gaps**:
    - Added comprehensive secret scanning