DOCSP-19051 intro tweak (#743)

* DOCSP-19051 intro tweak

* CR 1

* intro

* CR 1.5

* capitalize query

Author: ianf-mongodb

source/includes/fact-mongodb-intro.rst

@@ -1,8 +1,11 @@
 Welcome to the MongoDB {+version-dev+} Manual! MongoDB is a
 document database designed for ease of development
-and scaling. The Manual introduces key concepts in MongoDB, presents the
-query language, and provides operational and administrative
-considerations and procedures as well as a comprehensive reference
-section.
+and scaling. 
+
+The manual describes key concepts in MongoDB such as:
+
+- The query API
+- Operational and administrative references
+- Tutorials and procedures
 
 .. include:: /includes/in-dev.rst

source/introduction.txt

@@ -57,10 +57,10 @@ MongoDB provides high performance data persistence. In particular,
 - Indexes support faster queries and can include keys from embedded
   documents and arrays.
 
-Rich Query Language
-~~~~~~~~~~~~~~~~~~~
+Query API
+~~~~~~~~~
 
-MongoDB supports a rich query language to support :doc:`read and write
+The MongoDB Query API supports :doc:`read and write
 operations (CRUD) </crud>` as well as:
 
 - :doc:`Data Aggregation </core/aggregation-pipeline>`
@@ -127,3 +127,4 @@ third parties to develop storage engines for MongoDB.
    /core/databases-and-collections
    /core/document
    /reference/bson-types
+