* docs: refine connector doc

[TD-14839]

* docs: use TDengine CLI

[TD-14839]

* docs: replace JNI with navtive connection

[TD-14839]

* go sql insert example

* fix go doc bug

* adjust cluster part; change mysql to sql

* add go connect example using af

* go stmt example

* go influxdb line example

* go telnet line insert example

* reduce sample data

* go json insert example

* go query example

* adjust doc structure

* adjust doc structure

* modify sample code path