add keyboard shortcuts (#1038)

Author: ethanpalm

editor.mdx

@@ -319,6 +319,31 @@ Once your pull request is created:
 1. **Make additional changes**: After reviewing, make any changes in your web editor. Saving your changes will update your pull request.
 1. **Merge when ready**: When your pull request is ready, merge it to deploy changes to your live documentation site.
 
+## Keyboard shortcuts
+
+The web editor supports all common keyboard shortcuts such as copy, paste, undo, and select all, and the following shortcuts:
+
+| Command | macOS | Windows |
+|:--------|:------|:--------|
+| **Search files** | <kbd>Cmd</kbd> + <kbd>P</kbd> | <kbd>Control</kbd> + <kbd>P</kbd> |
+| **Add link to highlighted text** | <kbd>Cmd</kbd> + <kbd>K</kbd> | <kbd>Control</kbd> + <kbd>K</kbd> |
+| **Add line break** | <kbd>Cmd</kbd> + <kbd>Enter</kbd> | <kbd>Control</kbd> + <kbd>Enter</kbd> |
+| **Bold** | <kbd>Cmd</kbd> + <kbd>B</kbd> | <kbd>Control</kbd> + <kbd>B</kbd> |
+| **Italic** | <kbd>Cmd</kbd> + <kbd>I</kbd> | <kbd>Control</kbd> + <kbd>I</kbd> |
+| **Underline** | <kbd>Cmd</kbd> + <kbd>U</kbd> | <kbd>Control</kbd> + <kbd>U</kbd> |
+| **Strikethrough** | <kbd>Cmd</kbd> + <kbd>Shift</kbd> + <kbd>S</kbd> | <kbd>Control</kbd> + <kbd>Shift</kbd> + <kbd>S</kbd> |
+| **Code** | <kbd>Cmd</kbd> + <kbd>E</kbd> | <kbd>Control</kbd> + <kbd>E</kbd> |
+| **Normal text** | <kbd>Cmd</kbd> + <kbd>Alt</kbd> + <kbd>0</kbd> | <kbd>Control</kbd> + <kbd>Alt</kbd> + <kbd>0</kbd> |
+| **Heading 1** | <kbd>Cmd</kbd> + <kbd>Alt</kbd> + <kbd>1</kbd> | <kbd>Control</kbd> + <kbd>Alt</kbd> + <kbd>1</kbd> |
+| **Heading 2** | <kbd>Cmd</kbd> + <kbd>Alt</kbd> + <kbd>2</kbd> | <kbd>Control</kbd> + <kbd>Alt</kbd> + <kbd>2</kbd> |
+| **Heading 3** | <kbd>Cmd</kbd> + <kbd>Alt</kbd> + <kbd>3</kbd> | <kbd>Control</kbd> + <kbd>Alt</kbd> + <kbd>3</kbd> |
+| **Heading 4** | <kbd>Cmd</kbd> + <kbd>Alt</kbd> + <kbd>4</kbd> | <kbd>Control</kbd> + <kbd>Alt</kbd> + <kbd>4</kbd> |
+| **Ordered list** | <kbd>Cmd</kbd> + <kbd>Shift</kbd> + <kbd>7</kbd> | <kbd>Control</kbd> + <kbd>Shift</kbd> + <kbd>7</kbd> |
+| **Unordered list** | <kbd>Cmd</kbd> + <kbd>Shift</kbd> + <kbd>8</kbd> | <kbd>Control</kbd> + <kbd>Shift</kbd> + <kbd>8</kbd> |
+| **Blockquote** | <kbd>Cmd</kbd> + <kbd>Shift</kbd> + <kbd>B</kbd> | <kbd>Control</kbd> + <kbd>Shift</kbd> + <kbd>B</kbd> |
+| **Subscript** | <kbd>Cmd</kbd> + <kbd>,</kbd> | <kbd>Control</kbd> + <kbd>,</kbd> |
+| **Superscript** | <kbd>Cmd</kbd> + <kbd>.</kbd> | <kbd>Control</kbd> + <kbd>.</kbd> |
+
 ## Troubleshooting
 
 Here are solutions to common issues you might encounter with the web editor.