Remove spurious word User (#1250)

Author: illicitonion

org-cyf-itp/content/data-groups/success/index.md

@@ -1,6 +1,6 @@
 +++
 title = 'success'
-description = 'How do we know we have completed User Data Groups?'
+description = 'How do we know we have completed Data Groups?'
 layout = 'success'
 emoji= '✅'
 menu_level = ['module']