docs(odbc): add the instructions for using Native and WebSocket connection methods for ODBC

[YamingPei]

Description

Add the instructions for using Native and WebSocket connection methods for ODBC

Issue(s)

• Close https://project.feishu.cn/taosdata_td/feature/detail/6665211727

Checklist

Please check the items in the checklist if applicable.

• Is the user manual updated?
• Are the test cases passed and automated?
• Is there no significant decrease in test coverage?

[Copilot]

Pull request overview

Adds ODBC documentation guidance for choosing between Native and WebSocket connection modes, including deprecation messaging and usage constraints, in both Chinese and English connector references.

Changes:

• Add deprecation notice and explanatory section comparing Native vs WebSocket for ODBC.
• Add explicit warning that Native and WebSocket connections must not be mixed within the same process.
• Minor formatting/whitespace adjustments in the existing ODBC docs.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

File	Description
docs/zh/14-reference/05-connector/50-odbc.mdx	Adds Native deprecation notice + Native/WebSocket explanation + “cannot mix” warning; also tweaks Markdown formatting.
docs/en/14-reference/05-connector/50-odbc.md	Adds the same deprecation/explanation/warnings for English ODBC docs.

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[gemini-code-assist]

Code Review

This pull request updates the ODBC documentation in both English and Chinese to announce the deprecation of native connections by 2027-01-01, recommending a migration to WebSocket connections. It also adds information regarding the differences between these connection types and warns that they cannot be used simultaneously within the same process. Feedback was provided regarding incorrect relative links in the Chinese documentation that should point to the local directory index instead of the parent directory.