[auth] Fix documentation error in QgsAuthCertUtils

Author: dakcarto

python/core/auth/qgsauthcertutils.sip

@@ -84,6 +84,7 @@ Map certificate sha1 to certificate as simple cache
     static QByteArray fileData( const QString &path, bool astext = false );
 %Docstring
  Return data from a local file via a read-only operation
+ \param path Path to file to read
  \param astext Whether to open the file as text, otherwise as binary
  :return: All data contained in file or empty contents if file does not exist
  :rtype: QByteArray

src/core/auth/qgsauthcertutils.h

@@ -106,6 +106,7 @@ class CORE_EXPORT QgsAuthCertUtils
 
     /**
      * Return data from a local file via a read-only operation
+     * \param path Path to file to read
      * \param astext Whether to open the file as text, otherwise as binary
      * \returns All data contained in file or empty contents if file does not exist
      */