Update README.md

Author: nadar

README.md

@@ -61,6 +61,6 @@ $html = (new \Nadar\ProseMirror\Parser())
 
 > The `addNode()` and `replaceNode()` methods are almost identical internally, except that `replaceNode` should only be used when altering the output of default nodes. You can view all by-default declared nodes in the `Types` class.
 
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-**The text and image were created by an AI, as English is not my first language and I am quite lazy. Even this sentence was generated by AI.**
+*The text and image were created by an AI, as English is not my first language and I am quite lazy. Even this sentence was generated by AI.*