Replaced @returns with @return for more standard command use and compatibility.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@53549 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/sound.h

@@ -50,7 +50,7 @@ public:
         @param isResource
             @true if fileName is a resource, @false if it is a filename.
 
-        @returns @true if the call was successful, @false otherwise.
+        @return @true if the call was successful, @false otherwise.
     */
     bool Create(const wxString& fileName, bool isResource = false);