DOC: Use hatch style reference in Collection docstring.

QuLogic · QuLogic · commit 4da5274c3ff3 · 2020-07-16T19:39:34.000-04:00
Instead of the hatch demo, which doesn't do what the docstring says it
does.
diff --git a/lib/matplotlib/collections.py b/lib/matplotlib/collections.py
@@ -141,8 +141,8 @@ def __init__(self,
         hatch : str, optional
             Hatching pattern to use in filled paths, if any. Valid strings are
             ['/', '\\', '|', '-', '+', 'x', 'o', 'O', '.', '*']. See
-            :doc:`/gallery/shapes_and_collections/hatch_demo` for the meaning
-            of each hatch type.
+            :doc:`/gallery/shapes_and_collections/hatch_style_reference` for
+            the meaning of each hatch type.
         pickradius : float, default: 5.0
             If ``pickradius <= 0``, then `.Collection.contains` will return
             ``True`` whenever the test point is inside of one of the polygons
