update instructions for updating ReadTheDocs based on the changes to …

…the RTD web interface

docs/Release_Guide/release_steps/update_docs_official.rst

@@ -13,15 +13,15 @@ repository will need to do the following to update the default branch:
 
   * Click on the appropriate METplus component project
 
-  * Click on Admin in the top menu
-
-  * Click on Advanced Settings in the left menu
+  * Click on Settings in the top right menu
 
   * Select the new default branch in the dropdown menu for "Default branch"
-    (e.g. main_v4.0.0)
+    (e.g. main_v4.0.0) and click the Save button at the bottom of the page
 
   * Ensure that "latest" points to the new default branch by clicking on
-    "View Docs"in the upper right corner and confirm that the version number
+    "latest" build that just started and click on "Version latest" to view the
+    build run. When it finishes running, click on "View Docs" on the right of
+    the page and confirm that the version number
     displayed in the header is the desired version for "latest".