Update README.md

Author: waydabber

README.md

@@ -104,8 +104,10 @@ Install the app using one of the following methods:
 
 ### Homebrew
 1. Install [Homebrew](https://brew.sh/)
-1. Run `brew install --cask betterdisplay`
-   
+1. Run:
+```bash
+brew install --cask betterdisplay
+```   
 ## Using the App
 
 The app contains detailed explanations for most features (under `Settings` - click the gear icon at the bottom of the app menu). Check out the [Wiki section](https://github.com/waydabber/BetterDisplay/wiki) for more info on app usage.