docs: add vitepress metadata to flowchart docs

Changes the title in Vitepress, as well as using `outline: "deep"` for a better outline/table-of-contents for the page. See https://vitepress.vuejs.org/config/theme-configs#outline for docs on what `outline: "deep"` does.
mermaid-js · Jan 3, 2023 · 72d9788 · 72d9788
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diff --git a/docs/syntax/flowchart.md b/docs/syntax/flowchart.md
@@ -1,3 +1,8 @@
+---
+title: Flowcharts Syntax
+outline: 'deep' # shows all h3 headings in outline in Vitepress
+---
+
 > **Warning**
 >
 > ## THIS IS AN AUTOGENERATED FILE. DO NOT EDIT.

diff --git a/packages/mermaid/src/docs/syntax/flowchart.md b/packages/mermaid/src/docs/syntax/flowchart.md
@@ -1,3 +1,8 @@
+---
+title: Flowcharts Syntax
+outline: 'deep' # shows all h3 headings in outline in Vitepress
+---
+
 # Flowcharts - Basic Syntax
 
 All Flowcharts are composed of **nodes**, the geometric shapes and **edges**, the arrows or lines. The mermaid code defines the way that these **nodes** and **edges** are made and interact.