(DOCSP-50435) documents charts limitation (#709)

Author: carriecwk

source/includes/steps-embed-dashboard-unauthenticated.yaml

@@ -57,6 +57,9 @@ content: |
   
   #. Specify whether the embedded dashboard automatically refreshes.
 
+     If you are a free-tier user, a new four-hour option is selected by 
+     default as the auto-refresh interval.
+
   #. Select the :guilabel:`Light` or :guilabel:`Dark` display 
      theme for your embedded dashboard.
 

source/includes/steps-enable-embedding-iframe-anon.yaml

@@ -45,6 +45,9 @@ content: |
   a. The refresh interval determines how often your chart refreshes
      with new data, if any, from your data source.
 
+     If you are a free-tier user, a new four-hour option is selected by 
+     default as the auto-refresh interval. 
+
   #. You can select the :guilabel:`Light` or :guilabel:`Dark` display theme
      for your chart.
 ---