Fix chas -> chaos typo in deploy.go

cli/app/deploy.go

@@ -48,7 +48,7 @@ for this you need to look at the "abra app upgrade <domain>" command.
 You may pass "--force" to re-deploy the same version again. This can be useful
 if the container runtime has gotten into a weird state.
 
-Chas mode ("--chaos") will deploy your local checkout of a recipe as-is,
+Chaos mode ("--chaos") will deploy your local checkout of a recipe as-is,
 including unstaged changes and can be useful for live hacking and testing new
 recipes.
 `,