Update hoomd/md/pair/aniso.py

Co-authored-by: Joshua A. Anderson <joaander@umich.edu>

Author: Tobias-Dwyer

hoomd/md/pair/aniso.py

@@ -234,7 +234,7 @@ class YLZ(AnisotropicPair):
 
         .. code-block:: python
 
-            ylz.mu['A'] = (1.0,0.0,0.0)
+            ylz.mu['A'] = (1.0, 0.0, 0.0)
 
     """