update link to rico-on-hold blogpost

Author: madmas

README.md

@@ -1,5 +1,5 @@
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-  ⚠️ <b>IMPORTANT:</b> ⚠️ Rico has been put <b>"on hold"</b>. To learn what is meant by that please <a href="https://dev.karakun.com/rico/2021/07/02/rico-on-hold.html">read the blog post</a>  and feel free to contact us via [email protected] to clarify upon questions.<br />
+  ⚠️ <b>IMPORTANT:</b> ⚠️ Rico has been put <b>"on hold"</b>. To learn what is meant by that please <a href="https://dev.karakun.com/rico/2021/06/25/rico-on-hold.html">read the blog post</a>  and feel free to contact us via [email protected] to clarify open questions.<br />
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