update paragraph to use 2.4 content

Author: jyaistMap

samples/04_gis_analysts_data_scientists/covid19_part1_mapping_the_pandemic.ipynb

@@ -2024,8 +2024,7 @@
    "source": [
     "### Map the confirmed COVID-19 cases in China\n",
     "\n",
-    "We can either call the `add_layer()` function to add the specified layer or item (i.e. the FeatureLayer object created as `fl`) to the map widget, and set the visualization options to be using `ClassedSizeRenderer`, or plot the derived SeDF on the map view directly with further descriptions such as <a href=\"https://developers.arcgis.com/python/guide/visualizing-data-with-the-spatially-enabled-dataframe/\n",
-    "\">how to renderer spatial data using symbol and color palette</a> (Here, the SeDF is the derivative of the merged DataFrame, which now contains a SHAPE column that we can use to plot in the Map widget as polygons).\n",
+    "We can call the `map.content.add` method or the data frame's `spatial.plot()` method to add the specified layer or item (i.e. the FeatureLayer object created as `fl`) to the map widget. Once we do that, we can use that layer's RendererManager to access the smart_mapping() method to use class breaks rendering to visualize the data, distinguishing by size or color.\n",
     "\n",
     "#### Display confirmed cases in China as points"
    ]