[Question] phpdoc grey line sperator above & below

Hello!

I would like  to change my phpstorm similar to the image, where the ,,phpdoc" section is separated from the code. I saw this feature somewhere, where the phpdoc section is separated with grey line. I would like to have separate the phpdoc from the code with grey lines above, and below. I dont know if any of u could understand my wish :D

Its very similar to the image, there is a grey line above the phpdoc section.

If you could help me, which plugin is it / option settings, pls tell me.

Appreciate your help!