Update README.md with correct link (#1216)

Author: pamelafox

README.md

@@ -277,7 +277,7 @@ You can only run locally **after** having successfully run the `azd up` command.
 2. Change dir to `app`
 3. Run `./start.ps1` or `./start.sh` or run the "VS Code Task: Start App" to start the project locally.
 
-See more tips in [the local development guide](docs/local.md).
+See more tips in [the local development guide](docs/localdev.md).
 
 ## Using the app