Update note in old kernel fusion proposal.

Author: sommerlukas

sycl/doc/extensions/experimental/sycl_ext_codeplay_kernel_fusion.asciidoc

@@ -51,10 +51,11 @@ not rely on APIs defined in this specification.*
 [NOTE]
 ====
 There is a link:../proposed/sycl_ext_oneapi_graph_fusion.asciidoc[follow-up
-proposal] for fusion based on the https://github.com/intel/llvm/pull/5626[SYCL
-graph API]. That proposal continues some of the ideas presented in this
-proposal, but uses the more versatile SYCL graphs API to define the sequence of
-kernels to execute.
+proposal] for fusion based on the 
+https://github.com/intel/llvm/blob/sycl/sycl/doc/extensions/experimental/sycl_ext_oneapi_graph.asciidoc[SYCL graph API].
+That proposal continues some of the ideas presented in this proposal, but uses
+the more versatile SYCL graphs API to define the sequence of kernels to
+execute.
 
 Once accepted and implemented, the new proposal will supersede this proposal.
 ====