DOC: fix rst issue

tacaswell · tacaswell · commit a4f3e9e7643e · 2016-01-03T17:11:37.000-05:00
diff --git a/lib/matplotlib/cbook.py b/lib/matplotlib/cbook.py
@@ -2440,7 +2440,7 @@ def normalize_kwargs(kw, alias_mapping=None, required=(), forbidden=(),
      4. allowed
 
     This order means that only the canonical names need appear in
-    `allowed`, `forbidden`, `required `
+    `allowed`, `forbidden`, `required`
 
     Parameters
     ----------
