docs: upgrade docs from python subscription
docs: support stmt via ws
docs: optimizate python document base on java document

* docs: fix typos

* docs: fix udf typos

* 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

* fix: update 3.0 connector feature matrix

* docs: fix typos and use 3.1.0 in jdbc driver

* fix: update matrix for schemaless java status

* docs: use latest jdbc version in connect section

* docs: fix tab value and label

* docs: fix tab value and label

* docs: add dbname note in grafa and fix lots of unicode characters in english doc