DOC: Change path to path_or_buf in docstring

Author: dahlbaek

pandas/core/series.py

@@ -2887,7 +2887,7 @@ def to_csv(self, path_or_buf=None, index=True, sep=",", na_rep='',
 
         Parameters
         ----------
-        path : string or file handle, default None
+        path_or_buf : string or file handle, default None
             File path or object, if None is provided the result is returned as
             a string.
         na_rep : string, default ''