fix toc (#331)

(cherry picked from commit ebacb45)

Author: mongoKart

source/fundamentals.txt

@@ -11,34 +11,13 @@ Fundamentals
    :titlesonly:
    :maxdepth: 1
 
-   /fundamentals/connection
-   /fundamentals/database-collection
-   /fundamentals/crud
-   /fundamentals/builders
-   /fundamentals/atlas-search
-   /fundamentals/stable-api
-   /fundamentals/authentication
-   /fundamentals/aggregation
-   /fundamentals/linq
-   /fundamentals/bson
-   /fundamentals/specify-query
-   /fundamentals/serialization
-   /fundamentals/transactions
-   /fundamentals/indexes
-   /fundamentals/logging
-   /fundamentals/time-series
-   /fundamentals/encrypt-fields
-   /fundamentals/geo
-   /fundamentals/odata
-
    Connection </fundamentals/connection>
    Databases & Collections </fundamentals/database-collection>
    CRUD Operations </fundamentals/crud>
    Operations with Builders </fundamentals/builders>
    Atlas Search </fundamentals/atlas-search>
    Stable API </fundamentals/stable-api>
    Authentication </fundamentals/authentication>
-   Enterprise Authentication </fundamentals/enterprise-authentication>
    Aggregation </fundamentals/aggregation>
    LINQ </fundamentals/linq>
    BSON Operations </fundamentals/bson>