Update demos/hydroshare/USGS_dataretrieval_NLDI_Examples.ipynb

Co-authored-by: Elise Hinman <[email protected]>

demos/hydroshare/USGS_dataretrieval_NLDI_Examples.ipynb

@@ -365,7 +365,7 @@
    "metadata": {},
    "source": [
     "#### Example 1: Get all indexed features along a specified navigation path\n",
-    "Get all of the indexed features from a particular data source using a navigation path that traces upstream along the mainstam (UM) and uses as an origin for the trace a feature from a given feature source (e.g., a monitoring station from the Water Quality Portal). You can get any indexed features from any of the included data sources. Example data sources and the codes you need to retrieve features from those sources include:\n",
+    "Get all of the indexed features from a particular data source using a navigation path that traces upstream along the mainstem (UM) and uses as an origin for the trace a feature from a given feature source (e.g., a monitoring station from the Water Quality Portal). You can get any indexed features from any of the included data sources. Example data sources and the codes you need to retrieve features from those sources include:\n",
     "* \"census2020-nhdpv2\" - 2020 Census Block - NHDPlusV2 Catchment Intersections\n",
     "* \"epa_nrsa\" - EPA National Rivers and Streams Assessment\n",
     "* \"gfv11_pois\" - USGS Geospatial Fabric V1.1 Points of Interest\n",