fix: typo in README.md

README.md

@@ -16,7 +16,7 @@ To deploy this role to a managed host, the following software must be installed
 ## Quick start
 
 ```
-        ansible-playbook site.yml [-i <INVENTORY_FILE>] [--limit <HOSTNAME>] [-u <USERNAME] [-b]
+        ansible-playbook site.yml [-i <INVENTORY_FILE>] [--limit <HOSTNAME>] [-u <USERNAME>] [-b]
 ```
 
 ## General Ansible usage