DOC: Updating the timedeltas.seconds docstring for Issue pandas-dev#50969 (pandas-dev#51522)

* Updating the timedeltas.seconds docstring for Issue pandas-dev#50969

* Updating the docstring for Timedelta.seconds

* Removing docstrings on lines 1068-1071 as they're not needed.

* Update pandas/_libs/tslibs/timedeltas.pyx

---------

Co-authored-by: Marco Edward Gorelli <[email protected]>

Author: rmhowe425

pandas/_libs/tslibs/timedeltas.pyx

@@ -1075,6 +1075,7 @@ cdef class _Timedelta(timedelta):
         Timedelta.components : Return all attributes with assigned values
             (i.e. days, hours, minutes, seconds, milliseconds, microseconds,
             nanoseconds).
+        Timedelta.total_seconds : Express the Timedelta as total number of seconds.
 
         Examples
         --------