DOCSP-11718: add ToC to fundamentals non-landing page (#124)

Author: Chris Cho

source/fundamentals.txt

@@ -4,6 +4,15 @@ Fundamentals
 
 .. default-domain:: mongodb
 
+- :doc:`Connection Guide </fundamentals/connection>`
+- :doc:`Authentication </fundamentals/authentication>`
+- :doc:`CRUD Operations </fundamentals/crud>`
+- :doc:`Promises and Callbacks </fundamentals/promises>`
+- :doc:`Indexes </fundamentals/indexes>`
+- :doc:`Collations </fundamentals/collations>`
+- :doc:`Logging </fundamentals/logging>`
+- :doc:`Monitoring </fundamentals/monitoring>`
+
 .. toctree::
 
    /fundamentals/connection

source/usage-examples/delete-operations.txt

@@ -13,3 +13,4 @@ Delete Operations
 
    /usage-examples/deleteOne
    /usage-examples/deleteMany
+