Update canonical-data.json

Add test to check if two unordered lists are separated properly

exercises/markdown/canonical-data.json

@@ -164,6 +164,15 @@
         "markdown": "# Start a list\n* Item 1\n* Item 2\nEnd a list"
       },
       "expected": "<h1>Start a list</h1><ul><li>Item 1</li><li>Item 2</li></ul><p>End a list</p>"
+    },
+    {
+      "uuid": "69c5f35a-6d21-4aef-bcf5-18d193c7f622",
+      "description": "two unordered lists are separated properly",
+      "property": "parse",
+      "input": {
+        "markdown": "# Start list 1\n* Item 1\nEnd list 1\n# Start list 2\n* Item 1\n* Item 2\nEnd list 2"
+      },
+      "expected": "<h1>Start list 1</h1><ul><li>Item 1</li></ul><p>End list 1</p><h1>Start list 2</h1><ul><li>Item 1</li><li>Item 2</li></ul><p>End list 2</p>"
     }
   ]
 }