Fix up release checklist based on the v0.5 experience.
Fix up release checklist based on the v0.5 experience.

youfearm3/opusfile,xiph/opusfile,xiph/opusfile,SmartWalkieOrg/opusfile,SmartWalkieOrg/opusfile,youfearm3/opusfile,SmartWalkieOrg/opusfile,xiph/opusfile