DOC: Add learn more text in generic and removed from window

Author: sahildua2305

pandas/core/generic.py

@@ -3938,6 +3938,9 @@ def asfreq(self, freq, method=None, how=None, normalize=False):
         Returns
         -------
         converted : type of caller
+
+        To learn more about the frequency strings, please see `this link
+        <http://pandas.pydata.org/pandas-docs/stable/timeseries.html#offset-aliases>`__.
         """
         from pandas.tseries.resample import asfreq
         return asfreq(self, freq, method=method, how=how, normalize=normalize)
@@ -4009,6 +4012,9 @@ def resample(self, rule, how=None, axis=0, fill_method=None, closed=None,
             range from 0 through 4. Defaults to 0
 
 
+        To learn more about the offset strings, please see `this link
+        <http://pandas.pydata.org/pandas-docs/stable/timeseries.html#offset-aliases>`__.
+
         Examples
         --------
 

pandas/core/window.py

@@ -312,9 +312,6 @@ class Window(_Window):
     * ``gaussian`` (needs std)
     * ``general_gaussian`` (needs power, width)
     * ``slepian`` (needs width).
-
-    To learn more about the frequency strings, please see `this link
-    <http://pandas.pydata.org/pandas-docs/stable/timeseries.html#offset-aliases>`__.
 """
 
     def validate(self):