Update 21-configuration.md
Update 21-configuration.md
cornernote/app,Silver90/app,myorb/pmyapp,myorb/bookapp,phundament/app,davidfang/app,myorb/m2-parser-system,phundament/app,myorb/pmyapp,janatzend/app,janatzend/app,janatzend/app,phundament/app,myorb/bookapp,myorb/bookapp,cornernote/app,myorb/m2-parser-system,cornernote/app,Silver90/app,davidfang/app,myorb/pmyapp,myorb/m2-parser-system,myorb/pmyapp,Silver90/app,davidfang/app,myorb/m2-parser-system,philippfrenzel/app,philippfrenzel/app,philippfrenzel/app,cornernote/app