Update README.md

Author: jessiemongeon1

rust/counter/README.md

@@ -14,7 +14,11 @@ This example demonstrates a counter application.
 
 ### 3. Navigate into the project's directory.
 
-### 4. Run `dfx start --background --clean && dfx deploy` to deploy the project to your local environment. 
+### 4. Deploy the project to your local environment:
+
+```
+dfx start --background --clean && dfx deploy
+```
 
 ## Security considerations and best practices