Patch: correct broken link in WMS layer URL sample README (#844)

* Update wms readme to correct broken link

* Relocate 'About the data' section below 'Relevant API' to satisfy readme check

* Alphabetize keyword list to satisfy style checker

Author: mikewilburn

ogc/wms-layer-url/README.md

@@ -18,16 +18,16 @@ The map will load automatically when the sample starts.
     * **Note**: The name comes from the 'Name' property, not the 'Title' property. On many services, the title is human-readable while the name is a numeric identifier.
 2. Add the layer to the map as an operational layer with `map.getOperationalLayers().add(wmsLayer)`.
 
-## About the data
-
-This sample uses a [U.S. National Weather Service radar map](https://nowcoast.noaa.gov/geoserver/observations/weather_radar/wms). Because WMS services generate map images on-the-fly, this layer is always up-to-date with the latest [NOAA NEXRAD radar](https://www.ncdc.noaa.gov/data-access/radar-data/nexrad) observations.
-
 ## Relevant API
 
 * ArcGISMap
 * MapView
 * WmsLayer
 
+## About the data
+
+This sample uses a [U.S. National Weather Service radar map](https://nowcoast.noaa.gov/geoserver/observations/weather_radar/wms). Because WMS services generate map images on-the-fly, this layer is always up-to-date with the latest NOAA nowCOAST real-time coastal observations, forecasts, and warnings.
+
 ## Tags
 
 OGC, web map service, WMS

ogc/wms-layer-url/README.metadata.json

@@ -7,8 +7,8 @@
     ],
     "keywords": [
         "OGC",
-        "WMS",
         "web map service",
+        "WMS",
         "ArcGISMap",
         "MapView",
         "WmsLayer"