Fix formatting for make:workflow command in docs

Author: rmcdaniel

docs/defining-workflows/workflows.md

@@ -6,7 +6,7 @@ sidebar_position: 1
 
 In Laravel Workflow, workflows and activities are defined as classes that extend the base `Workflow` and `Activity` classes provided by the framework. A workflow is a class that defines a sequence of activities that run in parallel, series or a mixture of both. 
 
-You may use the make:workflow artisan command to generate a new workflow:
+You may use the `make:workflow` artisan command to generate a new workflow:
 
 ```php
 php artisan make:workflow MyWorkflow