DOCSP-48974 - Add CRUD to TOC (#242)

(cherry picked from commit 8e1f94f)

Author: mongoKart

source/index.txt

@@ -15,6 +15,7 @@ MongoDB {+driver-short+} Documentation
    Get Started </get-started>
    Connect </connect>
    Databases & Collections </databases-collections>
+   CRUD Operations </crud>
    Aggregation </aggregation>
    Data Formats </data-formats>
    Indexes </indexes>