align with new exercise syntax

Author: scottyhq

intermediate/indexing/advanced-indexing.ipynb

@@ -292,15 +292,12 @@
    "source": [
     "## Excersises\n",
     "\n",
-    "```{exercise}\n",
-    ":label: indexing-advanced-1\n",
+    "::::{admonition} Exercise\n",
+    ":class: tip\n",
     "\n",
     "In the simple 2D 5x5 Xarray data array above, select the sub-array containing (0,0),(2,2),(4,4) : \n",
-    "```\n",
-    "\n",
-    "\n",
     "\n",
-    "````{solution} indexing-advanced-1\n",
+    ":::{admonition} Solution\n",
     ":class: dropdown\n",
     "```python\n",
     "\n",
@@ -312,7 +309,8 @@
     "subset_da = da.sel(x=xs_da, y=xs_da)\n",
     "subset_da\n",
     "```\n",
-    "````\n"
+    ":::\n",
+    "::::"
    ]
   },
   {