Remove mention of celery from docs
Remove mention of celery from docs

nimasmi/wagtail,stevenewey/wagtail,rjsproxy/wagtail,mjec/wagtail,takeflight/wagtail,Pennebaker/wagtail,mayapurmedia/wagtail,bjesus/wagtail,serzans/wagtail,gasman/wagtail,timorieber/wagtail,nutztherookie/wagtail,iansprice/wagtail,kurtw/wagtail,taedori81/wagtail,gasman/wagtail,JoshBarr/wagtail,marctc/wagtail,nealtodd/wagtail,takeshineshiro/wagtail,rsalmaso/wagtail,mikedingjan/wagtail,inonit/wagtail,quru/wagtail,tangentlabs/wagtail,JoshBarr/wagtail,Klaudit/wagtail,jordij/wagtail,wagtail/wagtail,davecranwell/wagtail,serzans/wagtail,thenewguy/wagtail,WQuanfeng/wagtail,chrxr/wagtail,darith27/wagtail,FlipperPA/wagtail,nimasmi/wagtail,nrsimha/wagtail,gasman/wagtail,taedori81/wagtail,darith27/wagtail,jnns/wagtail,gogobook/wagtail,rv816/wagtail,tangentlabs/wagtail,timorieber/wagtail,zerolab/wagtail,torchbox/wagtail,hamsterbacke23/wagtail,davecranwell/wagtail,mjec/wagtail,rv816/wagtail,mephizzle/wagtail,Pennebaker/wagtail,thenewguy/wagtail,rsalmaso/wagtail,takeflight/wagtail,FlipperPA/wagtail,rjsproxy/wagtail,tangentlabs/wagtail,janusnic/wagtail,rv816/wagtail,quru/wagtail,KimGlazebrook/wagtail-experiment,davecranwell/wagtail,jnns/wagtail,m-sanders/wagtail,stevenewey/wagtail,mikedingjan/wagtail,thenewguy/wagtail,taedori81/wagtail,hanpama/wagtail,janusnic/wagtail,Tivix/wagtail,serzans/wagtail,mikedingjan/wagtail,rjsproxy/wagtail,taedori81/wagtail,nealtodd/wagtail,Toshakins/wagtail,gogobook/wagtail,marctc/wagtail,iansprice/wagtail,bjesus/wagtail,gogobook/wagtail,JoshBarr/wagtail,JoshBarr/wagtail,mixxorz/wagtail,taedori81/wagtail,m-sanders/wagtail,hanpama/wagtail,rsalmaso/wagtail,mephizzle/wagtail,darith27/wagtail,WQuanfeng/wagtail,chrxr/wagtail,gasman/wagtail,nutztherookie/wagtail,hamsterbacke23/wagtail,Toshakins/wagtail,iho/wagtail,inonit/wagtail,timorieber/wagtail,inonit/wagtail,stevenewey/wagtail,nealtodd/wagtail,Klaudit/wagtail,torchbox/wagtail,zerolab/wagtail,kaedroho/wagtail,stevenewey/wagtail,KimGlazebrook/wagtail-experiment,mixxorz/wagtail,thenewguy/wagtail,quru/wagtail,iho/wagtail,kaedroho/wagtail,bjesus/wagtail,zerolab/wagtail,takeflight/wagtail,zerolab/wagtail,chrxr/wagtail,kaedroho/wagtail,mjec/wagtail,jnns/wagtail,rsalmaso/wagtail,nilnvoid/wagtail,iho/wagtail,nilnvoid/wagtail,wagtail/wagtail,nealtodd/wagtail,jordij/wagtail,nrsimha/wagtail,Klaudit/wagtail,takeshineshiro/wagtail,mephizzle/wagtail,kurtrwall/wagtail,takeshineshiro/wagtail,hamsterbacke23/wagtail,mephizzle/wagtail,rv816/wagtail,quru/wagtail,rsalmaso/wagtail,hanpama/wagtail,wagtail/wagtail,rjsproxy/wagtail,mjec/wagtail,mikedingjan/wagtail,iansprice/wagtail,nrsimha/wagtail,gogobook/wagtail,nrsimha/wagtail,takeshineshiro/wagtail,Tivix/wagtail,takeflight/wagtail,zerolab/wagtail,nutztherookie/wagtail,mayapurmedia/wagtail,kaedroho/wagtail,WQuanfeng/wagtail,Pennebaker/wagtail,gasman/wagtail,KimGlazebrook/wagtail-experiment,torchbox/wagtail,mixxorz/wagtail,bjesus/wagtail,inonit/wagtail,mayapurmedia/wagtail,janusnic/wagtail,KimGlazebrook/wagtail-experiment,mixxorz/wagtail,Toshakins/wagtail,kurtw/wagtail,FlipperPA/wagtail,mixxorz/wagtail,m-sanders/wagtail,Pennebaker/wagtail,WQuanfeng/wagtail,nilnvoid/wagtail,kurtw/wagtail,janusnic/wagtail,torchbox/wagtail,wagtail/wagtail,kurtrwall/wagtail,marctc/wagtail,m-sanders/wagtail,jordij/wagtail,hanpama/wagtail,kaedroho/wagtail,tangentlabs/wagtail,chrxr/wagtail,Tivix/wagtail,kurtrwall/wagtail,nilnvoid/wagtail,mayapurmedia/wagtail,davecranwell/wagtail,nimasmi/wagtail,darith27/wagtail,Klaudit/wagtail,nutztherookie/wagtail,jordij/wagtail,serzans/wagtail,hamsterbacke23/wagtail,Toshakins/wagtail,kurtw/wagtail,FlipperPA/wagtail,thenewguy/wagtail,kurtrwall/wagtail,jnns/wagtail,iho/wagtail,Tivix/wagtail,nimasmi/wagtail,timorieber/wagtail,marctc/wagtail,iansprice/wagtail,wagtail/wagtail