Improved: Manual: username+pw for demo login (#4072)
Improved: Manual: username+pw for demo login (#4072)

* added: username+pw for demo login

* fix white spaces
aledeg/FreshRSS,Alkarex/FreshRSS,Alkarex/FreshRSS,Alkarex/FreshRSS,Alkarex/FreshRSS,FreshRSS/FreshRSS,aledeg/FreshRSS,FreshRSS/FreshRSS,aledeg/FreshRSS,FreshRSS/FreshRSS,aledeg/FreshRSS,FreshRSS/FreshRSS