Updated Quick Installer usage (markdown)

Quick-Installer-usage.md

@@ -23,5 +23,5 @@ Similarly, this option overrides the default git branch (master). This is useful
 
 An example combining the two options is given below:
 ```
-curl -sL https://install.raspap.com | bash -s -- --repo billz/my-other-repo --branch my-great-feature
+curl -sL https://install.raspap.com | bash -s -- --repo foo/bar --branch my-great-feature
 ```