docs: add tips for the max-preview plugin

max-preview.yazi/README.md

@@ -22,3 +22,26 @@ desc = "Maximize or restore preview"
 ```
 
 Make sure the <kbd>T</kbd> key is not used elsewhere.
+
+## Tips
+
+This plugin only maximizes the "available preview area", without actually changing the content size.
+
+This means that the appearance of your preview largely depends on the previewer you are using.
+However, most previewers tend to make the most of the available space, so this usually isn't an issue.
+
+For image previews, you may want to tune up the [`max_width`][max-width] and [`max_height`][max-height] options in your `yazi.toml`:
+
+```toml
+[preview]
+# Change them to your desired values
+max_width  = 1000
+max_height = 1000
+```
+
+[max-width]: https://yazi-rs.github.io/docs/configuration/yazi/#preview.max_width
+[max-height]: https://yazi-rs.github.io/docs/configuration/yazi/#preview.max_height
+
+## License
+
+This plugin is MIT-licensed. For more information check the [LICENSE](LICENSE) file.