Fix version_added for insertbefore in lineinfile

library/lineinfile

@@ -66,7 +66,7 @@ options:
     choices: [ 'EOF', '*regex*' ]
   insertbefore:
     required: false
-    versionadded: 1.1
+    version_added: 1.1
     description:
       - Used with C(state=present). If specified, the line will be inserted
         before the specified regular expression. A value is available;