Docs/update issue 52106 (#52161)

***updates***
- updated docstrings of pandas.offsers.MonthBegin, MonthEnd, BMonthBegin, BMonthEnd

Author: pranav-ravuri

pandas/_libs/tslibs/offsets.pyx

@@ -2546,7 +2546,6 @@ cdef class MonthEnd(MonthOffset):
     DateOffset of one month end.
 
     MonthEnd goes to the next date which is an end of the month.
-    To get the end of the current month pass the parameter n equals 0.
 
     See Also
     --------
@@ -2562,10 +2561,10 @@ cdef class MonthEnd(MonthOffset):
     >>> ts + pd.offsets.MonthEnd()
     Timestamp('2022-02-28 00:00:00')
 
-    If you want to get the end of the current month pass the parameter n equals 0:
+    If you want to get the end of the current month:
 
     >>> ts = pd.Timestamp(2022, 1, 31)
-    >>> ts + pd.offsets.MonthEnd(0)
+    >>> pd.offsets.MonthEnd().rollforward(ts)
     Timestamp('2022-01-31 00:00:00')
     """
     _period_dtype_code = PeriodDtypeCode.M
@@ -2578,7 +2577,6 @@ cdef class MonthBegin(MonthOffset):
     DateOffset of one month at beginning.
 
     MonthBegin goes to the next date which is a start of the month.
-    To get the start of the current month pass the parameter n equals 0.
 
     See Also
     --------
@@ -2594,10 +2592,10 @@ cdef class MonthBegin(MonthOffset):
     >>> ts + pd.offsets.MonthBegin()
     Timestamp('2023-01-01 00:00:00')
 
-    If you want to get the start of the current month pass the parameter n equals 0:
+    If you want to get the start of the current month:
 
     >>> ts = pd.Timestamp(2022, 12, 1)
-    >>> ts + pd.offsets.MonthBegin(0)
+    >>> pd.offsets.MonthBegin().rollback(ts)
     Timestamp('2022-12-01 00:00:00')
     """
     _prefix = "MS"
@@ -2609,7 +2607,6 @@ cdef class BusinessMonthEnd(MonthOffset):
     DateOffset increments between the last business day of the month.
 
     BusinessMonthEnd goes to the next date which is the last business day of the month.
-    To get the last business day of the current month pass the parameter n equals 0.
 
     Examples
     --------
@@ -2621,11 +2618,10 @@ cdef class BusinessMonthEnd(MonthOffset):
     >>> ts + pd.offsets.BMonthEnd()
     Timestamp('2022-12-30 00:00:00')
 
-    If you want to get the end of the current business month
-    pass the parameter n equals 0:
+    If you want to get the end of the current business month:
 
     >>> ts = pd.Timestamp(2022, 11, 30)
-    >>> ts + pd.offsets.BMonthEnd(0)
+    >>> pd.offsets.BMonthEnd().rollforward(ts)
     Timestamp('2022-11-30 00:00:00')
     """
     _prefix = "BM"
@@ -2637,8 +2633,7 @@ cdef class BusinessMonthBegin(MonthOffset):
     DateOffset of one month at the first business day.
 
     BusinessMonthBegin goes to the next date which is the first business day
-    of the month. To get the first business day of the current month pass
-    the parameter n equals 0.
+    of the month.
 
     Examples
     --------
@@ -2650,11 +2645,10 @@ cdef class BusinessMonthBegin(MonthOffset):
     >>> ts + pd.offsets.BMonthBegin()
     Timestamp('2023-01-02 00:00:00')
 
-    If you want to get the start of the current business month pass
-    the parameter n equals 0:
+    If you want to get the start of the current business month:
 
     >>> ts = pd.Timestamp(2022, 12, 1)
-    >>> ts + pd.offsets.BMonthBegin(0)
+    >>> pd.offsets.BMonthBegin().rollback(ts)
     Timestamp('2022-12-01 00:00:00')
     """
     _prefix = "BMS"