fix doxygen warning

Author: jef-n

src/core/qgsfontutils.h

@@ -82,6 +82,7 @@ class CORE_EXPORT QgsFontUtils
     static QFont getStandardTestFont( const QString& style = "Roman", int pointsize = 12 );
 
     /**Returns a DOM element containing the properties of the font.
+     * @param font font
      * @param document DOM document
      * @param elementName name for DOM element
      * @returns DOM element containing font settings