DOC: add double backticks for sphinx compatibility

Co-authored-by: mroeschke <[email protected]>

Author: tuhinsharma121

pandas/_libs/tslibs/timedeltas.pyx

@@ -1411,10 +1411,10 @@ cdef class _Timedelta(timedelta):
         """
         Return a numpy.timedelta64 object with 'ns' precision.
 
-        Since NumPy uses `timedelta64` objects for its time operations, converting
-        a pandas `Timedelta` into a NumPy `timedelta64` provides seamless integration
-        between the two libraries, especially when working in environments that
-        heavily rely on NumPy for array-based calculations.
+        Since NumPy uses ``timedelta64`` objects for its time operations, converting
+        a pandas ``Timedelta`` into a NumPy ``timedelta64`` provides seamless
+        integration between the two libraries, especially when working in environments
+        that heavily rely on NumPy for array-based calculations.
 
         See Also
         --------