NIFI-7175 Fixed core attributes formatting in Developer Guide. (#4066)
NIFI-7175 Fixed core attributes formatting in Developer Guide. (#4066)

* NIFI-7175 Fixed core attributes formatting in Developer Guide.

* NIFI-7175 Made core attribute names more consistent.

jfrazee/nifi,patricker/nifi,mattyb149/nifi,mcgilman/nifi,jfrazee/nifi,mcgilman/nifi,aperepel/nifi,MikeThomsen/nifi,jfrazee/nifi,mcgilman/nifi,m-hogue/nifi,mattyb149/nifi,MikeThomsen/nifi,alopresto/nifi,aperepel/nifi,m-hogue/nifi,patricker/nifi,trixpan/nifi,patricker/nifi,alopresto/nifi,ijokarumawak/nifi,jtstorck/nifi,trixpan/nifi,ijokarumawak/nifi,ijokarumawak/nifi,jtstorck/nifi,YolandaMDavis/nifi,mattyb149/nifi,YolandaMDavis/nifi,pvillard31/nifi,jfrazee/nifi,aperepel/nifi,trixpan/nifi,MikeThomsen/nifi,ijokarumawak/nifi,m-hogue/nifi,alopresto/nifi,trixpan/nifi,m-hogue/nifi,pvillard31/nifi,alopresto/nifi,YolandaMDavis/nifi,m-hogue/nifi,patricker/nifi,pvillard31/nifi,jtstorck/nifi,aperepel/nifi,pvillard31/nifi,MikeThomsen/nifi,m-hogue/nifi,aperepel/nifi,YolandaMDavis/nifi,m-hogue/nifi,YolandaMDavis/nifi,ijokarumawak/nifi,jfrazee/nifi,patricker/nifi,mcgilman/nifi,alopresto/nifi,trixpan/nifi,jtstorck/nifi,jfrazee/nifi,MikeThomsen/nifi,YolandaMDavis/nifi,pvillard31/nifi,mattyb149/nifi,jtstorck/nifi,pvillard31/nifi,pvillard31/nifi,mattyb149/nifi,mcgilman/nifi,mcgilman/nifi,jtstorck/nifi,trixpan/nifi,mattyb149/nifi,mattyb149/nifi,patricker/nifi,YolandaMDavis/nifi,alopresto/nifi,aperepel/nifi,MikeThomsen/nifi,jfrazee/nifi,jtstorck/nifi,MikeThomsen/nifi,patricker/nifi,alopresto/nifi,mcgilman/nifi,pvillard31/nifi,ijokarumawak/nifi,jfrazee/nifi