Modified sycl graphs docs to mention free function ext

Author: Konrad Kusiak

sycl/doc/extensions/experimental/sycl_ext_oneapi_graph.asciidoc

@@ -58,6 +58,7 @@ Jack Kirk, Codeplay +
 Ronan Keryell, AMD +
 Andrey Alekseenko, KTH Royal Institute of Technology +
 Fábio Mestre, Codeplay +
+Konrad Kusiak, Codeplay +
 
 == Dependencies
 
@@ -1979,10 +1980,16 @@ can be used adding nodes to a graph when creating a graph from queue recording.
 New methods are also defined that enable submitting an executable graph, 
 e.g. directly to a queue without returning an event.
 
+==== sycl_ext_oneapi_free_function_kernels
+
+`sycl_ext_oneapi_free_function_kernels`, defined in 
+link:../proposed/sycl_ext_oneapi_free_function_kernels.asciidoc[sycl_ext_oneapi_free_function_kernels]
+can be used with SYCL Graphs. 
+
 == Examples and Usage Guide
 
 Detailed code examples and usage guidelines are provided in the
-link:../../SYCLGraphUsageGuide.md[SYCL Graph Usage Guide].
+link:../../syclgraph/SYCLGraphUsageGuide.md[SYCL Graph Usage Guide].
 
 == Future Direction [[future-direction]]