change return to notes

Author: jyaistMap

guide/02-api-overview/overview24.ipynb

@@ -186,7 +186,7 @@
     "\n",
     "Properties\n",
     "\n",
-    "|WebMap member                      |Map member                         |Return|\n",
+    "|WebMap member                      |Map member                         |Notes|\n",
     "|:-                                 |:-                                 |:-    |\n",
     "|wm.basemap|m.basemap.basemap|new BasemapManager class|\n",
     "|wm.basemap_switcher|NA||\n",