fix: modalities taxonomy, task_type, url consolidation, structural corrections

metadata.json

@@ -7,7 +7,7 @@
         "en"
       ],
       "modalities": [
-        "image"
+        "single_image_start"
       ],
       "task_type": "vqa",
       "prompt_template": "<image>{{ question }}\n",
@@ -38,12 +38,10 @@
         },
         "source": {
           "format": "huggingface",
-          "links": {
-            "test": "https://huggingface.co/datasets/MathLLMs/MathVision/viewer/test",
-            "testmini": "https://huggingface.co/datasets/MathLLMs/MathVision/viewer/testmini"
-          },
-          "url": "https://huggingface.co/datasets/MathLLMs/MathVision",
-          "repo": "MathLLMs/MathVision"
+          "url": {
+            "test": "https://huggingface.co/datasets/MathLLMs/MathVision",
+            "testmini": "https://huggingface.co/datasets/MathLLMs/MathVision"
+          }
         }
       }
     }