Change the Slug of a Custom Post Type [CPT]

Its most required and desired functionality needed in word press when we create a custom post type and we need to change the slug accordingly so following lines in custom post type declaration helps

'rewrite'               => array('slug'=>'csj'),

We had a custom post type with a slug 'justice-cpt' but on single page the URL's needed to have just 'csj'

As seen in back end

As seen on front end