Fix cudagraph check message (pytorch#115664)

This error message is printed when CUDAGraph trees are used with multiple device indices.

However, the message seems to say the opposite.

Pull Request resolved: pytorch#115664
Approved by: https://github.com/soulitzer

torch/_inductor/compile_fx.py

@@ -369,7 +369,7 @@ def compile_fx_inner(
                     len(compiled_graph.device_idxs) == 1
                     or not config.triton.cudagraph_trees
                 ),
-                "multiple device indices without cudagraph_trees",
+                "multiple device indices with cudagraph_trees",
             ),
         ]
         cudagraph_fail_reasons = [s for b, s in cudagraph_tests if not b]