docs: update index.md about Monitor parameter

@gccgdb1234 docs: remove obsolete documentation folders

Test-NetConnection command is wrong

docs: fix syntax error

docs: correct PHP connector release address

docs: PHP connector English version in 2.4

fix: inserting data from multi files is not supported

* docs: fix dashboard id

* docs: fix broken links of grafana plugin

docs: add release notes for 2.4

fix(client): schemaless support tag value have comma blank equal sign

test: doc exmaples to 2.4 CI

for 2.4

docs: Update 02-rest-api.mdx

增加更多有关启动 taosAdapter 服务的描述。