DOC: update SemiMonthEnd examples to not use (n=0) (#52171)

remove tip to use n=0

Co-authored-by: MarcoGorelli <>

Author: MarcoGorelli

pandas/_libs/tslibs/offsets.pyx

@@ -2815,10 +2815,10 @@ cdef class SemiMonthEnd(SemiMonthOffset):
     >>> ts + pd.offsets.SemiMonthEnd()
     Timestamp('2022-02-15 00:00:00')
 
-    If you want to get the result for the current month pass the parameter n equals 0:
+    If you want to get the result for the current month:
 
     >>> ts = pd.Timestamp(2022, 1, 15)
-    >>> ts + pd.offsets.SemiMonthEnd(0)
+    >>> pd.offsets.SemiMonthEnd().rollforward(ts)
     Timestamp('2022-01-15 00:00:00')
     """
     _prefix = "SM"