Update .changeset/slimy-cobras-end.md

Co-authored-by: Sarah Rainsberger <sarah@rainsberger.ca>

.changeset/slimy-cobras-end.md

@@ -4,4 +4,4 @@
 
 Allows integrations after the MDX integration to update `markdown.remarkPlugins` and `markdown.rehypePlugins`, and have the plugins work in MDX too.
 
-If you rely on the ordering before to not add remark/rehype plugins for MDX, you need to configure `@astrojs/mdx` with `extendMarkdownConfig: false` and explicitly specify the `remarkPlugins` and `rehypePlugins` options instead.
+If your integration relies on Astro's previous behavior that prevents integrations from adding remark/rehype plugins for MDX, you will now need to configure `@astrojs/mdx` with `extendMarkdownConfig: false` and explicitly specify any `remarkPlugins` and `rehypePlugins` options instead.