add dash so entries of release are consistent (#4385)
add dash so entries of release are consistent (#4385)

Signed-off-by: Andrew Hsu <f92968afc12903b4e22dfb0d2a8d9823100da266@docker.com>
johnstep/docker.github.io,johnstep/docker.github.io,docker/docker.github.io,thaJeztah/docker.github.io,shin-/docker.github.io,londoncalling/docker.github.io,anweiss/docker.github.io,johnstep/docker.github.io,shubheksha/docker.github.io,londoncalling/docker.github.io,anweiss/docker.github.io,shin-/docker.github.io,JimGalasyn/docker.github.io,johnstep/docker.github.io,shubheksha/docker.github.io,thaJeztah/docker.github.io,JimGalasyn/docker.github.io,JimGalasyn/docker.github.io,thaJeztah/docker.github.io,JimGalasyn/docker.github.io,shubheksha/docker.github.io,anweiss/docker.github.io,docker/docker.github.io,londoncalling/docker.github.io,JimGalasyn/docker.github.io,londoncalling/docker.github.io,anweiss/docker.github.io,shin-/docker.github.io,londoncalling/docker.github.io,shin-/docker.github.io,anweiss/docker.github.io,docker/docker.github.io,docker/docker.github.io,docker/docker.github.io,shubheksha/docker.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io,johnstep/docker.github.io,shubheksha/docker.github.io,shin-/docker.github.io