Fix prose

Author: wooorm

readme.md

@@ -28,9 +28,8 @@ perform the second algorithm.
 This package provides the low-level modules for integrating with the micromark
 tokenizer and the micromark HTML compiler.
 
-You probably shouldn’t use this package directly, but instead use
-[`mdast-util-gfm-autolink-literal`][mdast-util-gfm-autolink-literal] with
-**[mdast][]**.
+You probably should use this package with
+[`mdast-util-gfm-autolink-literal`][mdast-util-gfm-autolink-literal].
 
 ## Install
 
@@ -129,8 +128,6 @@ abide by its terms.
 
 [remark]: https://github.com/remarkjs/remark
 
-[mdast]: https://github.com/syntax-tree/mdast
-
 [mdast-util-gfm-autolink-literal]: https://github.com/syntax-tree/mdast-util-gfm-autolink-literal
 
 [literal autolinks]: https://github.github.com/gfm/#autolinks-extension-