Sequence Diagram Title Isn't Centered

[apeacock1991]

Description

When adding a title to a sequence diagram, it is not centered, unlike all other diagrams. It doesn't matter whether you use the new title syntax, or the old one.

Steps to reproduce

Sequence diagram example with text not centered:

---
title: Not center
---
sequenceDiagram
    A-->B: test

Class diagram centered:

---
title: Not center
---
classDiagram
    A-->B

Screenshots

Code Sample

No response

Setup

Desktop

• OS and Version: Mac
• Browser and Version: Chrome, 108

Additional Context

No response

[apeacock1991]

Mermaid usage sucks on GitHub. Unlike every other language, a code block is executed rather than displayed. A prefix on the first line like ! should have been used for execute.

You can just leave off the "mermaid" from the first line, and just do it with backticks:

Not rendered:

sequenceDiagram
  A->>B: test

Rendered:

sequenceDiagram
  A->>B: test

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Sure it doesn't give you syntax highlighting, but Mermaid's syntax is very simple anyway, so I think it's generally fine

[zsynacl]

Encounterd same issue when using Typora, and I'm pretty sure that issue will happen on Github.

sequenceDiagram
title: 备选方案1：很长的描述文字ABCDEFGHIJKLMNOPQRST

A ->> B: msg1
B -->> A: msg2
A ->> A: do something
A -->> B: msg3<br/>(status=true)
B -->> C: msg4

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