Update gimp examples

evaluation_examples/examples/gimp/7a4deb26-d57d-4ea9-9a73-630f66a7b568.json

@@ -1,7 +1,7 @@
 {
     "id": "7a4deb26-d57d-4ea9-9a73-630f66a7b568",
     "snapshot": "gimp",
-    "instruction": "Make my picture less bright, please.",
+    "instruction": "Could you tone down the brightness of my photo?",
     "source": "https://www.quora.com/How-do-I-edit-a-photo-in-GIMP",
     "config": [
         {
@@ -16,9 +16,12 @@
             }
         },
         {
-            "type": "open",
+            "type": "launch",
             "parameters": {
-                "path": "Desktop/woman_sitting_by_the_tree.png"
+                "command": [
+                    "gimp",
+                    "Desktop/woman_sitting_by_the_tree.png"
+                ]
             }
         }
     ],
@@ -27,7 +30,7 @@
         "gimp"
     ],
     "evaluator": {
-        "func": "decrease_brightness",
+        "func": "check_brightness_decrease_and_structure_sim",
         "expected": {
             "type": "vm_file",
             "path": "Desktop/woman_sitting_by_the_tree.png",