modify the inconsistent argument name

List was not formatted correctly in FAQ

Rephrasing and spelling

Rephrased sentences, some stylistic changes.

Stylistics, grammar and changed string "topic" to "topicname" in one Java example code snippet since topic is a keyword in TDengine.

ci: add 2.6 branch to ci

[TS-1568]

Stylistic changes.

rephrased slightly

Spelling, grammar and stylistic.

Stylistic and grammar changes.

Rephrased sentences.

Rephrasing in some places.

docs: refine a  statement

Minor stylistic changes.

Additions, rephrasing.

Some additions, stylistic changes, grammar, spelling changes.

Added some phrases.
Stylistic changes.

docs: port the changes by chait from 2.4 to 2.6 in functions.md

stylistic change

grammatical, stylistic and one spelling change.