docs: Updating doxygen comments and minor update to normalize API

Change-Id: I24686acc36f372ee2eddffaaa6c104f964ceeca4
Refs: #1299
diff --git a/src/security/validator-regex.hpp b/src/security/validator-regex.hpp
index fd006c4..e0977a8 100644
--- a/src/security/validator-regex.hpp
+++ b/src/security/validator-regex.hpp
@@ -50,7 +50,7 @@
   /**
    * @brief Add a rule for data verification.
    *
-   * @param policy The verification rule
+   * @param rule The verification rule
    */
   inline void
   addDataVerificationRule(shared_ptr<SecRuleRelative> rule);