[doc] fix upgrades file design
[doc] fix upgrades file design

Payum/Payum,ASKozienko/Payum,formapro-forks/Payum,emmadery/hello-world,StoreFactory/Payum,aitboudad/Payum,Payum/Payum,fullpipe/Payum,formapro-forks/Payum,StoreFactory/Payum,StoreFactory/Payum,digisec/Payum,digisec/Payum,staabm/Payum,fullpipe/Payum