Improve formatting

Co-authored-by: Ewan Crawford <[email protected]>

Author: fabiomestre

sycl/doc/extensions/experimental/sycl_ext_oneapi_graph.asciidoc

@@ -564,7 +564,8 @@ namespace ext::oneapi::experimental {
 class dynamic_command_group {
 public:
   dynamic_command_group(
-      command_graph<graph_state::modifiable> graph, const std::vector<std::function<void(handler &)>>& cgfList);
+      command_graph<graph_state::modifiable> graph,
+      const std::vector<std::function<void(handler &)>>& cgfList);
 
   size_t get_active_cgf();
   void set_active_cgf(size_t cgfIndex);