Add missing meta descriptions (#123)

* Add missing meta descriptions

* Update index.txt

* Update whats-new.txt

---------

Co-authored-by: Rea Rustagi <85902999+rustagir@users.noreply.github.com>

Author: nlarew

source/index.txt

@@ -2,6 +2,9 @@
 {+driver-long+}
 ====================
 
+.. meta::
+   :description: Explore resources and tutorials for using the MongoDB Scala Driver.
+
 .. contents:: On this page
    :local:
    :backlinks: none
@@ -133,4 +136,4 @@ The Developer Hub provides tutorials and social engagement for
 developers.
 
 To ask questions and engage in discussions with fellow developers who
-use the {+driver-short+}, see the `forums page <https://www.mongodb.com/community/forums/tag/scala>`__.
+use the {+driver-short+}, see the `forums page <https://www.mongodb.com/community/forums/tag/scala>`__.

source/whats-new.txt

@@ -10,6 +10,7 @@ What's New
 
 .. meta::
    :keywords: update, new feature, deprecation, upgrade
+   :description: Discover new features, improvements, and fixes in each version of the MongoDB Scala Driver.
 
 .. contents:: On this page
    :local: