add cupy doc to intersphinx_mapping

Author: Vahid Tavanashad

doc/conf.py

@@ -218,9 +218,10 @@ def _can_document_member(member, *args, **kwargs):
 
 intersphinx_mapping = {
     "python": ("https://docs.python.org/3/", None),
-    "numpy": ("https://docs.scipy.org/doc/numpy/", None),
+    "numpy": ("https://numpy.org/doc/stable/", None),
     "scipy": ("https://docs.scipy.org/doc/scipy/reference/", None),
     "dpctl": ("https://intelpython.github.io/dpctl/latest/", None),
+    "cupy": ("https://docs.cupy.dev/en/stable/", None),
 }
 
 # If true, `todo` and `todoList` produce output, else they produce nothing.