DOC: Fixed errors in pandas.DataFrame.asfreq PR07, RT02, RT03, SA04 (pandas-dev#32362)

Author: tolhassianipar

pandas/core/generic.py

@@ -7485,6 +7485,7 @@ def asfreq(
         Parameters
         ----------
         freq : DateOffset or str
+            Frequency DateOffset or string.
         method : {'backfill'/'bfill', 'pad'/'ffill'}, default None
             Method to use for filling holes in reindexed Series (note this
             does not fill NaNs that already were present):
@@ -7502,11 +7503,12 @@ def asfreq(
 
         Returns
         -------
-        converted : same type as caller
+        Same type as caller
+            Object converted to the specified frequency.
 
         See Also
         --------
-        reindex
+        reindex : Conform DataFrame to new index with optional filling logic.
 
         Notes
         -----