Update cluster-ch.md

Update cluster-ch.md

pump up alert version number

TD-1272 fix unaddressable errors

Update faq-ch.md

Update cluster-ch.md

Hotfix/td 1350

Feature/crash

add syncInit and syncCleanUp functions

[TD-1389]<test>: update query null value test

[TD-1407] <fix> fix an issue coverity reports

Update administrator-ch.md

Update administrator-ch.md

Master

[TD-1331]<docs> update taos sql and add error code