DOCSP-41495: php v1.20 compat updates

Author: rustagir

docs/index.txt

@@ -2,7 +2,22 @@
 MongoDB PHP Library
 ===================
 
-.. default-domain:: mongodb
+.. contents:: On this page
+   :local:
+   :backlinks: none
+   :depth: 1
+
+.. toctree::
+   :titlesonly:
+
+   Installation </tutorial/install-php-library>
+   /tutorial
+   /upgrade
+   /reference
+   FAQ </faq>
+   /whats-new
+
+HELLO TEST
 
 The |php-library| provides a high-level abstraction around the lower-level
 :php:`mongodb extension <mongodb>`.
@@ -44,6 +59,9 @@ If you have previously worked with the legacy ``mongo`` extension, it will be
 helpful to review the :doc:`/upgrade` for a summary of API changes between the
 old driver and this library.
 
+You can view changes introduced in each version release of the
+{+php-library+} in the :ref:`php-lib-whats-new` section.
+
 New to MongoDB?
 ---------------
 
@@ -59,14 +77,3 @@ encounter in the library documentation:
   :manual:`BSON Types </reference/bson-types>`
 
 - :manual:`MongoDB CRUD Operations </crud>`
-
-.. class:: hidden
-
-   .. toctree::
-      :titlesonly:
-
-      Installation </tutorial/install-php-library>
-      /tutorial
-      /upgrade
-      /reference
-      FAQ </faq>