[ResponseOps][Reporting][9.1 & Serverless] Minor adjustments to scheduled reporting docs (#2246)

Makes fixes to scheduled reporting docs to bring them to parity with the
8.19 docs at elastic/kibana#229221.

Author: nastasha-solomon

explore-analyze/report-and-share.md

@@ -88,6 +88,10 @@ In the following dashboard, the shareable container is highlighted:
     * {applies_to}`stack: ga 9.0` From the toolbar, click **Share** > **Export** tab, then choose a file type. Note that when you create a dashboard report that includes a data table or Discover session, the PDF includes only the visible data.
     * {applies_to}`stack: ga 9.1` From the toolbar, click the **Export** icon, then choose a file type. 
 
+    ::::{note}
+    When you create a dashboard report that includes a data table or Discover session, the PDF includes only the visible data.
+    ::::
+
     ::::{tip}
 
     Tips for generating PDF reports:

explore-analyze/report-and-share/automating-report-generation.md

@@ -16,18 +16,18 @@ To automatically generate PDF and CSV reports, generate a POST URL, then submit
 
 Create the POST URL that triggers a report to generate PDF and CSV reports.
 
-### PDF reports
+### PDF and PNG reports [pdf-png-post-url]
 
 To create the POST URL for PDF reports:
 
 1. Go to **Dashboards**, **Visualize Library**, or **Canvas**.
 2. Open the dashboard, visualization, or **Canvas** workpad you want to view as a report. From the toolbar, do one of the following:
 
-    * {applies_to}`stack: ga 9.0` If you are using **Dashboard** or **Visualize Library**, click **Share > Export**, select the PDF option, then click **Copy POST URL**.
+    * {applies_to}`stack: ga 9.0` If you are using **Dashboard** or **Visualize Library**, click **Share > Export**, select the PDF or PNG option, then click **Copy POST URL**.
     * {applies_to}`stack: ga 9.0` If you are using **Canvas**, click **Share > PDF Reports**, then click **Advanced options > Copy POST URL**.
-    * {applies_to}`stack: ga 9.1` Click the **Export** icon, then **PDF**. In the export flyout, copy the POST URL.
+    * {applies_to}`stack: ga 9.1` Click the **Export** icon, then **PDF** or **PNG**. In the export flyout, copy the POST URL.
 
-### CSV reports
+### CSV reports [csv-post-url]
 
 To create the POST URL for CSV reports: