Update overture notebook with new API names (#94)

Author: jesspav

docs/overture-examples.ipynb

@@ -360,7 +360,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# get all the divisions in Nova Scotia and save them in memory with collect()\n",
+    "# get all the divisions in Nova Scotia and save them in memory with to_memtable()\n",
     "nova_scotia_bbox_wkt = (\n",
     "    \"POLYGON((-66.5 43.4, -66.5 47.1, -59.8 47.1, -59.8 43.4, -66.5 43.4))\"\n",
     ")\n",
@@ -370,7 +370,7 @@
     "FROM division_area\n",
     "WHERE\n",
     "    ST_Intersects(geometry, ST_SetSRID(ST_GeomFromText('{nova_scotia_bbox_wkt}'), 4326))\n",
-    "\"\"\").collect()"
+    "\"\"\").to_memtable()"
    ]
   },
   {
@@ -424,7 +424,7 @@
    ],
    "source": [
     "%%time\n",
-    "# this executes quickly because the Nova Scotia data was persisted in memory with collect()\n",
+    "# this executes quickly because the Nova Scotia data was persisted in memory with to_memtable()\n",
     "df.show(2)"
    ]
   }