spec: fix table formatting
spec: fix table formatting

ChengTiesheng/spec,marineam/spec,apcera/appc-spec,jonboulle/spec,marineam/spec,tklauser/spec,dgonyeo/spec,dustymabe/spec,apcera/appc-spec,tklauser/spec,zenlinTechnofreak/spec,dustymabe/spec,ChengTiesheng/spec,zenlinTechnofreak/spec,stufflebear/spec,craimbert/spec,sgotti/spec,mesosphere/spec,yifan-gu/spec,ChengTiesheng/spec,3ofcoins/appc-spec,stufflebear/spec,dustymabe/spec,appc/spec,jonboulle/spec,craimbert/spec,squeed/spec,iaguis/appc-spec,krnowak/appc-spec,iaguis/appc-spec,apcera/appc-spec,appc/spec,iaguis/appc-spec,jonboulle/spec,squeed/spec,stufflebear/spec,marineam/spec,tklauser/spec,krnowak/appc-spec,zenlinTechnofreak/spec,dgonyeo/spec,endocode/appc-spec,yifan-gu/spec,alban/appc-spec,yifan-gu/spec,dgonyeo/spec,alban/appc-spec,squeed/spec,mesosphere/spec,endocode/appc-spec,philips/spec,sgotti/spec,craimbert/spec,philips/spec,appc/spec,endocode/appc-spec,krnowak/appc-spec,3ofcoins/appc-spec,alban/appc-spec,3ofcoins/appc-spec