Fix grammar for Error Type section in 11.1
Fix grammar for Error Type section in 11.1

faxriddin/build-web-application-with-golang,admpub/build-web-application-with-golang,astaxie/build-web-application-with-golang,admpub/build-web-application-with-golang,admpub/build-web-application-with-golang,WangKaimin/build-web-application-with-golang,faxriddin/build-web-application-with-golang,admpub/build-web-application-with-golang,WangKaimin/build-web-application-with-golang,astaxie/build-web-application-with-golang,astaxie/build-web-application-with-golang,songqii/build-web-application-with-golang,songqii/build-web-application-with-golang