spec: fix typo in app manifest.json
spec: fix typo in app manifest.json

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