Fix wording in CodeSpaces Deep Dive

content/codespaces/getting-started/deep-dive.md

@@ -73,7 +73,7 @@ Port forwarding determines which ports are made accessible to you from the remot
 
 When an application running inside {% data variables.product.prodname_codespaces %} outputs a port to the console, {% data variables.product.prodname_codespaces %} detects the localhost URL pattern and automatically forwards the port. You can click on the URL in the terminal or in the toast message to open the port in a browser. For more information on port forwarding, see "[Forwarding ports in your codespace](/codespaces/developing-in-codespaces/forwarding-ports-in-your-codespace)."
 
-While ports can be forwarded automatically, they are not are publicly accessible to the internet. By default, all ports are private, but you can [manually make a port public](/codespaces/developing-in-codespaces/forwarding-ports-in-your-codespace#sharing-a-port) to share access through a URL.
+While ports can be forwarded automatically, they are not publicly accessible to the internet. By default, all ports are private, but you can [manually make a port public](/codespaces/developing-in-codespaces/forwarding-ports-in-your-codespace#sharing-a-port) to share access through a URL.
 
 Running your application when you first land in your codespace can make for a fast inner dev loop. As you edit, your changes are automatically saved and available on your forwarded port. To view changes, go back to the running application tab in your browser and refresh it.