Update overview.md

Acrolinx Correctness edit: this this -> this

Author: v-stsavell

articles/digital-twins/overview.md

@@ -102,7 +102,7 @@ The following diagram shows where Azure Digital Twins might lie in the context o
 
 ## Resources
 
-This section highlights some resources that may be useful while working with Azure Digital Twins. You can view additional resources in the **Resources** section of this this documentation set (accessible through the navigation links to the left).
+This section highlights some resources that may be useful while working with Azure Digital Twins. You can view additional resources in the **Resources** section of this documentation set (accessible through the navigation links to the left).
 
 ### Service limits
 
@@ -116,4 +116,4 @@ You can view a list of common IoT terms and their uses across the Azure IoT serv
 
 * Dive into working with Azure Digital Twins in [Get started with Azure Digital Twins Explorer](quickstart-azure-digital-twins-explorer.md) and [Build out an end-to-end solution](tutorial-end-to-end.md) to see example scenarios.
 
-* Or, start reading about Azure Digital Twins concepts with [DTDL models](concepts-models.md).
+* Or, start reading about Azure Digital Twins concepts with [DTDL models](concepts-models.md).