DOCSP-17062: Data Formats drawer (#108)

* DOCSP-17062: add page links

This PR resolves DOCSP-17062 by removing the overview section and
adding page links to each document within the data formats section.

* bullet list entries

Author: terakilobyte

source/fundamentals/data-formats.txt

@@ -4,7 +4,15 @@ Data Formats
 
 .. default-domain:: mongodb
 
+- :doc:`/fundamentals/data-formats/document-data-format-bson`
+- :doc:`/fundamentals/data-formats/document-data-format-extended-json`
+- :doc:`/fundamentals/data-formats/documents`
+- :doc:`/fundamentals/data-formats/document-data-format-pojo`
+- :doc:`/fundamentals/data-formats/pojo-customization`
+- :doc:`/fundamentals/data-formats/codecs`
+
 .. toctree::
+   :caption: Data Formats
 
    /fundamentals/data-formats/document-data-format-bson
    /fundamentals/data-formats/document-data-format-extended-json
@@ -13,8 +21,4 @@ Data Formats
    /fundamentals/data-formats/pojo-customization
    /fundamentals/data-formats/codecs
 
-Overview
---------
 
-Description about Data Formats, provide some guidance on where to find
-specific info.