cleanup extension sample

src/incl/extension_sample.c

@@ -1,6 +1,6 @@
 #include <stdio.h>
 
-#include "incl/extension.h"
+#include "extension.h"
 #include "yaze.h"
 
 void my_extension_initialize(yaze_editor_context* context) {
@@ -45,4 +45,4 @@ yaze_extension* get_yaze_extension(void) {
                                my_extension_register_custom_tools,
                                my_extension_register_event_hooks};
   return &ext;
-}
+}