fix typo which confuses everything

StevenPuttemans · StevenPuttemans · commit 8fc35bb6ae05 · 2014-09-04T15:46:06.000+02:00
diff --git a/modules/xfeatures2d/doc/extra_features.rst b/modules/xfeatures2d/doc/extra_features.rst
@@ -1,5 +1,5 @@
-Non-free 2D Features Algorithms
-=================================
+Experimental 2D Features Algorithms
+===================================
 
 This section describes experimental algorithms for 2d feature detection.
 
