Fix mistakes with PSR-0, PSR-2 and PSR-4 in quality section.
Fix mistakes with PSR-0, PSR-2 and PSR-4 in quality section.

thephpleague/thephpleague.github.io,01walid/thephpleague.github.io,colinodell/thephpleague.github.io,colinodell/thephpleague.github.io,colinodell/thephpleague.github.io,christophrumpel/de.thephpleague.com,01walid/thephpleague.github.io,thephpleague/thephpleague.github.io,thephpleague/thephpleague.github.io