change path to cpu_features submodule

.gitmodules

@@ -9,4 +9,4 @@
 	url = https://github.com/henrydcase/benchmark.git
 [submodule "3rd/cpu_features"]
 	path = 3rd/cpu_features
-	url = https://github.com/google/cpu_features.git
+	url = https://github.com/henrydcase/cpu_features.git