Merge branch 'main' into feature/new-highlight-extension

# Conflicts:
#	docs/src/docPages/api/extensions.md
#	docs/src/links.yaml
#	packages/core/src/extensions/toggleMark.ts

docs/src/docPages/api/marks/highlight.md

@@ -0,0 +1,33 @@
+# Highlight
+Use this extension to render highlighted text with `<mark>`. You can use only default `<mark>` HTML tag, which has a yellow background color by default, or apply different colors.
+
+Type `==two equal signs==` and it will magically transform to <mark>highlighted</mark> text while you type.
+
+## Installation
+```bash
+# With npm
+npm install @tiptap/extension-highlight
+
+# Or: With Yarn
+yarn add @tiptap/extension-highlight
+```
+
+## Settings
+| Option | Type   | Default | Description                                  |
+| ------ | ------ | ------- | -------------------------------------------- |
+| class  | string | –       | Add a custom class to the rendered HTML tag. |
+
+## Commands
+| Command   | Options | Description                                                 |
+| --------- | ------- | ----------------------------------------------------------- |
+| highlight | color   | Mark text as highlighted, optionally pass a specific color. |
+
+## Keyboard shortcuts
+* Windows/Linux: `Control`&nbsp;`E`
+* macOS: `Cmd`&nbsp;`E`
+
+## Source code
+[packages/extension-highlight/](https://github.com/ueberdosis/tiptap-next/blob/main/packages/extension-highlight/)
+
+## Usage
+<demo name="Extensions/Highlight" highlight="3-8,48,67" />