BUG: fix docstring (#34560)

Author: jbrockmendel

pandas/_libs/tslibs/timedeltas.pyx

@@ -907,19 +907,19 @@ cdef class _Timedelta(timedelta):
         Examples
         --------
         >>> td = pd.Timedelta('1 days 2 min 3 us 42 ns')
-        >>> td.resolution
+        >>> td.resolution_string
         'N'
 
         >>> td = pd.Timedelta('1 days 2 min 3 us')
-        >>> td.resolution
+        >>> td.resolution_string
         'U'
 
         >>> td = pd.Timedelta('2 min 3 s')
-        >>> td.resolution
+        >>> td.resolution_string
         'S'
 
         >>> td = pd.Timedelta(36, unit='us')
-        >>> td.resolution
+        >>> td.resolution_string
         'U'
         """
         self._ensure_components()