fix minor typo

Author: jyaistMap

guide/02-api-overview/release_notes_201.ipynb

@@ -10,7 +10,7 @@
     "## New\n",
     "* Adds [`arcgis.graph`](/api-reference/arcgis.graph/) module\n",
     "  * [`KnowledgeGraph`](/api-reference/arcgis.graph/#knowledgegraph) class\n",
-    "    * Provides access to adatamodel and properties\n",
+    "    * Provides access to a datamodel and properties\n",
     "    * Provides methods to search and query the graph\n",
     "  * Explore **[ArcGIS Knowledge](https://pro.arcgis.com/en/pro-app/latest/help/data/knowledge/get-started-with-arcgis-knowledge.htm)** to learn more.\n",
     "* Adds new [`arcgis.gis.sharing`](/api-reference/arcgis.gis.sharing/) submodule\n",