Update sources/core/codeguard-0-mcp-security.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: santosomar

sources/core/codeguard-0-mcp-security.md

@@ -68,7 +68,7 @@ Required security controls to implement:
 
 ### Logging and Observability
 - Implement logging in your MCP servers and clients
-- Log: tools decided to use, parameters, originating prompt
+- Log: tools that were used, parameters, originating prompt
 - Use OpenTelemetry for end-to-end linkability of actions
 - Maintain immutable records of actions and authorizations