Update seccomp note and remove ref to Fedora 22
Update seccomp note and remove ref to Fedora 22

thaJeztah/docker.github.io,docker/docker.github.io,londoncalling/docker.github.io,anweiss/docker.github.io,docker/docker.github.io,JimGalasyn/docker.github.io,londoncalling/docker.github.io,docker/docker.github.io,docker/docker.github.io,anweiss/docker.github.io,johnstep/docker.github.io,londoncalling/docker.github.io,docker/docker.github.io,anweiss/docker.github.io,thaJeztah/docker.github.io,johnstep/docker.github.io,thaJeztah/docker.github.io,londoncalling/docker.github.io,londoncalling/docker.github.io,JimGalasyn/docker.github.io,johnstep/docker.github.io,anweiss/docker.github.io,JimGalasyn/docker.github.io,thaJeztah/docker.github.io,johnstep/docker.github.io,thaJeztah/docker.github.io,JimGalasyn/docker.github.io,johnstep/docker.github.io,JimGalasyn/docker.github.io,anweiss/docker.github.io