DOCSP-50725: Fix Fundamentals page metadata (#650)

Author: mcmorisi

source/fundamentals.txt

@@ -5,7 +5,7 @@ Fundamentals
 ============
 
 .. meta::
-   :description: Learn how to use the (+driver-long+} to run commands on MongoDB.
+   :description: Learn how to use the MongoDB .NET/C# Driver to run commands on MongoDB.
 
 .. toctree::
    :titlesonly: