Update current plugin api version in docs
Update current plugin api version in docs

naderman/composer,curry684/composer,fabpot/composer,vdm-io/composer,alcohol/composer,floverdevel/composer,localheinz/composer,SpacePossum/composer,dzuelke/composer,composer/composer,stefangr/composer,remicollet/composer,gencer/composer,milleruk/composer,andrerom/composer,johnstevenson/composer,fabiang/composer,staabm/composer,pierredup/composer,hirak/composer,slbmeh/composer,balbuf/composer,stof/composer,erasys/composer,nicolas-grekas/composer