* docs: add taoskeeper start as service

* docs: update taoskeer launch

* docs: this line is inaccurate, in current connector-python repo, it require python >= 3.6.2 because there is a dependence iso8601

* docs: append websocket doc for python connector

* docs: fix tabitem

---------
Co-authored-by: NAdam Ji <jrgwyz@163.com>

* docs: this line is inaccurate, in current connector-python repo, it require python >= 3.6.2 because there is a dependence iso8601

* docs: append websocket doc for python connector

---------
Co-authored-by: NAdam Ji <jrgwyz@163.com>

* docs: add directions of mac uninstall

* docs: reformat

* docs: update taosbenchmark new argument with 3.0.3.0 release

* docs: add cli websocket argument

* fix: tools/shell/src/shellArguments.c

* fix: taos shell ws arg description

* docs: update csharp connector status

* docs: fix csharp ws bulk pulling

* docs: clarify database param is optional to websocket dsn

* docs: fix java connector mistake

* fix: a few typos

* fix: many typos

* docs: java connector support subscription over websocket