docs: fix markdown

Author: Sascha Goldhofer

README.md

@@ -1,6 +1,6 @@
 <h1 align="left"><img src="./docs/gson-query.png" width="256" alt="gson-query"></h1>
 
-!! package `gson-query` has moved to `@sagold/json-query`. Please change package source as `gson-query` will no longer be updated.
+**⚠️ package `gson-query` has moved to `@sagold/json-query`. Please change package source as `gson-query` will no longer be updated.**
 
 > gson-query lets you quickly select values, patterns or types from json-data. Its input requires a simple string, describing a concise query into your data