Merge pull request Esri#2118 from Esri/NA/guides_1

Update sample for 2.4 mapping syntax

Author: jyaistMap

samples/04_gis_analysts_data_scientists/locating_a_new_retirement_community.ipynb

@@ -253,7 +253,7 @@
    },
    "outputs": [],
    "source": [
-    "m1.add_layer(target_community)"
+    "m1.content.add(target_community)"
    ]
   },
   {
@@ -361,8 +361,8 @@
    },
    "outputs": [],
    "source": [
-    "target_area_map.add_layer(target_area)\n",
-    "target_area_map.add_layer(target_community)"
+    "target_area_map.content.add(target_area)\n",
+    "target_area_map.content.add(target_community)"
    ]
   },
   {
@@ -2189,7 +2189,7 @@
    "outputs": [],
    "source": [
     "map1 = gis.map('Atlanta')\n",
-    "map1.add_layer(top_4_most_similar_results)"
+    "map1.content.add(top_4_most_similar_results)"
    ]
   },
   {
@@ -2201,7 +2201,7 @@
    "outputs": [],
    "source": [
     "map2 = gis.map('Houston')\n",
-    "map2.add_layer(top_4_most_similar_results)"
+    "map2.content.add(top_4_most_similar_results)"
    ]
   },
   {