Bug fix: php artisan boost:update no longer throws "Undefined variable
\$row" when composing this package's guidelines in a consuming app.

The js() helper bullet in resources/boost/guidelines/core.blade.php
contains literal Blade interpolation ({{ js(\$row->id) }}) as example
syntax. Boost renders the guideline file as Blade, so the interpolation
was evaluated at render time.

The v3.0.1 fix only wrapped <atom:...> tags; Blade {{ }} interpolation
in prose slipped through. v3.0.2 adds the missing @verbatim wrap. No
other unwrapped Blade interpolation remains in the file.