fix: wrap <path> in code block

Signed-off-by: Bart Jaskulski <bjaskulski@protonmail.com>

README.md

@@ -12,7 +12,7 @@ composer require wpdesk/phpstan-rules
 
 After installation, you can simply use PHPStan in your project without the need to further configuration. Nevertheless, as project grows, it's worth to add even [the basic one](https://phpstan.org/config-reference).
 
-To run PHPStan, simply execute the following command (<path> is only required if not present in configuration file):
+To run PHPStan, simply execute the following command (`<path>` is only required if not present in configuration file):
 
 ```sh
 vendor/bin/phpstan analyse <path>