Merge pull request #12001 from jorisvandenbossche/doc-alpha-escape

DOC: fix escape in EWM docstring

Author: jorisvandenbossche

pandas/core/window.py

@@ -966,7 +966,7 @@ def corr(self, other=None, pairwise=None, **kwargs):
 """
 
 class EWM(_Rolling):
-    """
+    r"""
     Provides exponential weighted functions
 
     .. versionadded:: 0.18.0