docs: API documentation fixes

Change-Id: I1088a156c9ac055f974900454647dcb9a7b7ec54
Refs: #3210
diff --git a/src/security/identity.hpp b/src/security/identity.hpp
index d77428d..0ac8201 100644
--- a/src/security/identity.hpp
+++ b/src/security/identity.hpp
@@ -74,7 +74,7 @@
   getName() const;
 
   /**
-   * @brief Get a key with id @keyId.
+   * @brief Get a key with id @p keyId.
    *
    * @param keyId The id of the key to get.
    * @throw Pib::Error if the key does not exist.