Documentation updates (#475)
Documentation updates (#475)

- fixed a few ` symbols
- clarified blade examples to demonstrate that a collection can be passed, and avoided using facade in example to avoid having to import the class into blade
- added another pipe-separated entry to middleware examples for demo purposes
- added section on re-registering with Gate when unit testing
- tiny wording tweaks to cache tips
drbyte/laravel-permission,ChadLRoss/laravel-permission,spatie/laravel-permission,ChadLRoss/laravel-permission,drbyte/laravel-permission