Update DOCS.md

Grammar fix: adding missing preposition

DOCS.md

@@ -59,7 +59,7 @@ A workaround exists to get debugging working in C# projects, by using Samsung's
 
 ### Proprietary Extensions
 
-Like the debuggers mentioned above, some extensions you may find in the marketplace (like the [Remote Development Extensions](https://code.visualstudio.com/docs/remote/remote-overview)) only function the offical Visual Studio Code build. You can work around this by adding the extension's internal ID (found on the extension's page) to the `extensionAllowedProposedApi` property of the product.json in your VSCodium installation. For example:
+Like the debuggers mentioned above, some extensions you may find in the marketplace (like the [Remote Development Extensions](https://code.visualstudio.com/docs/remote/remote-overview)) only function with the offical Visual Studio Code build. You can work around this by adding the extension's internal ID (found on the extension's page) to the `extensionAllowedProposedApi` property of the product.json in your VSCodium installation. For example:
 
 ```json
   "extensionAllowedProposedApi": [