Update console.rst

In code example 'Configuring the Command' use single quote instead of double quotes to align with other code examples

Author: rumaxr

console.rst

@@ -57,7 +57,7 @@ method. Then you can optionally define a help message and the
 
             // the full command description shown when running the command with
             // the "--help" option
-            ->setHelp("This command allows you to create users...")
+            ->setHelp('This command allows you to create users...')
         ;
     }