remove redundant double quotations around Series

Author: DaanVanHauwermeiren

pandas/core/series.py

@@ -2745,10 +2745,10 @@ def _take(self, indices, axis=0, convert=True, is_copy=False):
 
     def isin(self, values):
         """
-        Check whether ``values`` are contained in ``Series``.
+        Check whether ``values`` are contained in Series.
 
-        Return a boolean ``Series`` showing whether each element in the
-        ``Series`` is exactly contained in the passed sequence of ``values``.
+        Return a boolean Series showing whether each element in the Series
+        is exactly contained in the passed sequence of ``values``.
 
         Parameters
         ----------