Update gimp examples

evaluation_examples/examples/gimp/554785e9-4523-4e7a-b8e1-8016f565f56a.json

@@ -1,7 +1,7 @@
 {
     "id": "554785e9-4523-4e7a-b8e1-8016f565f56a",
     "snapshot": "gimp",
-    "instruction": "Could you help me increase the saturation of my photo to make it more colorful?",
+    "instruction": "Could you assist me in enhancing the color vibrancy 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_tree2.png"
+                "command": [
+                    "gimp",
+                    "Desktop/woman_sitting_by_the_tree2.png"
+                ]
             }
         }
     ],
@@ -27,7 +30,7 @@
         "gimp"
     ],
     "evaluator": {
-        "func": "increase_saturation",
+        "func": "check_saturation_increase_and_structure_sim",
         "expected": {
             "type": "vm_file",
             "path": "Desktop/woman_sitting_by_the_tree2.png",