winex11.drv: Fix a typo.

dlls/winex11.drv/xinerama.c

@@ -186,7 +186,7 @@ BOOL xinerama_get_fullscreen_monitors( const RECT *rect, long *indices )
 done:
     pthread_mutex_unlock( &xinerama_mutex );
     if (ret)
-        TRACE( "fullsceen monitors: %ld,%ld,%ld,%ld.\n", indices[0], indices[1], indices[2], indices[3] );
+        TRACE( "fullscreen monitors: %ld,%ld,%ld,%ld.\n", indices[0], indices[1], indices[2], indices[3] );
     return ret;
 }