DOC: doc-update-link-for-cugraphops (rapidsai#4279)

Fixes a broken link

https://github.com/rapidsai/cugraph-ops/blob/branch-23.04/README.md -> https://github.com/rapidsai/cugraph/blob/branch-24.04/readme_pages/cugraph_ops.md

Authors:
  - Ray Bell (https://github.com/raybellwaves)
  - Alex Barghi (https://github.com/alexbarghi-nv)
  - Rick Ratzel (https://github.com/rlratzel)

Approvers:
  - Don Acosta (https://github.com/acostadon)

URL: rapidsai#4279

docs/cugraph/source/graph_support/cugraphops_support.rst

@@ -7,4 +7,4 @@ cugraph-ops aims to be a low-level, framework agnostic library providing commonl
 .. toctree::
    :maxdepth: 3
 
-   https://github.com/rapidsai/cugraph-ops/blob/branch-23.04/README.md
+   https://github.com/rapidsai/cugraph/blob/branch-24.06/readme_pages/cugraph_ops.md