link typo fix (#4377)

Author: jordan-smith721

source/core/queryable-encryption/tutorials.txt

@@ -50,7 +50,7 @@ Code samples for specific language drivers:
 - `Node.js <{+sample-app-url-qe+}/node/>`__
 - `Java <{+sample-app-url-qe+}/java/>`__
 - `Go <{+sample-app-url-qe+}/go/>`__
-- `C#/.NET <{+sample-app-url-qe+}/dotnet/>`__
+- `C#/.NET <{+sample-app-url-qe+}/csharp/>`__
 
 
 .. toctree::