add missing references to DesignDoc and KnownIssues
add missing references to DesignDoc and KnownIssues

empiredan/googletest,jlanecox/googletest,jlanecox/googletest,antidotcb/googletest,google/googletest,google/googletest,gianricardo/googletest,empiredan/googletest,empiredan/googletest,antidotcb/googletest,gianricardo/googletest,antidotcb/googletest,google/googletest,gianricardo/googletest,jlanecox/googletest,jlanecox/googletest,antidotcb/googletest,google/googletest