Add release note about populating form builder clean_name
Add release note about populating form builder clean_name

Ref: #6093

gasman/wagtail,wagtail/wagtail,rsalmaso/wagtail,takeflight/wagtail,thenewguy/wagtail,mixxorz/wagtail,FlipperPA/wagtail,jnns/wagtail,mixxorz/wagtail,mixxorz/wagtail,wagtail/wagtail,gasman/wagtail,mixxorz/wagtail,thenewguy/wagtail,zerolab/wagtail,gasman/wagtail,gasman/wagtail,FlipperPA/wagtail,torchbox/wagtail,mixxorz/wagtail,wagtail/wagtail,jnns/wagtail,zerolab/wagtail,torchbox/wagtail,thenewguy/wagtail,wagtail/wagtail,takeflight/wagtail,thenewguy/wagtail,rsalmaso/wagtail,thenewguy/wagtail,takeflight/wagtail,kaedroho/wagtail,kaedroho/wagtail,zerolab/wagtail,gasman/wagtail,FlipperPA/wagtail,zerolab/wagtail,kaedroho/wagtail,FlipperPA/wagtail,wagtail/wagtail,jnns/wagtail,rsalmaso/wagtail,kaedroho/wagtail,jnns/wagtail,rsalmaso/wagtail,torchbox/wagtail,kaedroho/wagtail,torchbox/wagtail,rsalmaso/wagtail,takeflight/wagtail,zerolab/wagtail