add embedsignature to offsets.pyx

Author: Dr-Irv

pandas/_libs/tslibs/offsets.pyx

@@ -1,3 +1,5 @@
+# cython: embedsignature=True
+
 import re
 import time
 import warnings
@@ -1180,6 +1182,11 @@ cdef class Day(Tick):
     """
     Offset ``n`` days.
 
+    Parameters
+    ----------
+    n : int
+        Number of multiples of the frequency.
+
     Attributes
     ----------
     n : int, default 1