feat(plugin-markdown-hint): add inline rendering support for title

[pengzhanbo]

Before submitting the PR, please make sure you do the following

• Read the Contributing Guidelines.
• Provide a description in this PR that addresses what the PR is solving. If this PR is going to solve an existing issue, please reference the issue (e.g. close #123).

What is the purpose of this pull request?

• Bug fix
• New feature
• Other

Description

Input:

::: important Custom Title `code`

A important container with customized title.

:::

Output:

Screenshots

Before

After

[coveralls]

Pull Request Test Coverage Report for Build 11258875973

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 57.839%

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Totals
Change from base Build 11254585743:	0.0%
Covered Lines:	1171
Relevant Lines:	1819

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💛 - Coveralls

[Mister-Hope]

I think this should be better sent to upstream with a new option