Update DataGrid.ipynb

Author: dsblank

notebooks/DataGrid.ipynb

@@ -583,7 +583,7 @@
         "In the demo below, we will add annotations to the image. Annotations are composed of layers, and layers can contain `boxes` or `polygons`.\n",
         "\n",
         "```python\n",
-        "       annotations=[\n",
+        "        annotations=[\n",
         "            comet_ml.Layer(\n",
         "                boxes=[\n",
         "                    comet_ml.Box([x, y, w, h], label=label),\n",
@@ -878,4 +878,4 @@
       }
     }
   ]
-}
+}