DOC: Fix incorrect redirect

Author: QuLogic

examples/text_labels_and_annotations/font_family_rc.py

@@ -24,7 +24,7 @@
   rcParams['font.sans-serif'] = ['Tahoma', 'DejaVu Sans',
                                  'Lucida Grande', 'Verdana']
 
-.. redirect-from:: /examples/font_family_rc_sgskip
+.. redirect-from:: /gallery/font_family_rc_sgskip