bring up the requirement

Author: stamat

README.md

@@ -16,6 +16,8 @@ Instead of grabbing footnote bodies with a single regex and patching the output
 npm install marked-github-footnote
 ```
 
+Requires `marked` >= 12.
+
 ## Usage
 
 ```javascript
@@ -104,8 +106,6 @@ You get this HTML:
 | `heading`      | `"Footnotes"`                | Text of the visually hidden footnotes section heading.                                                                         |
 | `backRefLabel` | `"Back to reference {0}{1}"` | aria-label template for back-reference links. `{0}` is the reference number, `{1}` is the suffix (e.g. `"-2"`). Supports i18n. |
 
-Requires `marked` >= 12.
-
 ## Why this instead of `marked-footnote`?
 
 [marked-footnote](https://github.com/markedjs/marked-footnote) is the official marked extension for footnotes. `marked-github-footnote` differs in several important ways: