chore: Deploy to Elestio button updated (FlowiseAI#3039)

Author: kaiwalyakoparkar

README.md

@@ -177,7 +177,7 @@ Deploy Flowise self-hosted in your existing infrastructure, we support various [
 
     -   [Elestio](https://elest.io/open-source/flowiseai)
 
-        [![Deploy](https://pub-da36157c854648669813f3f76c526c2b.r2.dev/deploy-on-elestio-black.png)](https://elest.io/open-source/flowiseai)
+        [![Deploy on Elestio](https://elest.io/images/logos/deploy-to-elestio-btn.png)](https://elest.io/open-source/flowiseai)
 
     -   [Sealos](https://cloud.sealos.io/?openapp=system-template%3FtemplateName%3Dflowise)