fix: fix md formatting

Author: eliax1996

README.md

@@ -1,6 +1,6 @@
 # Aiven's GCS Sink Connector for Apache Kafka®
 
-> [!IMPORTANT]  
+> [!IMPORTANT]
 > The Aiven GCS Connector for Apache Kafka development has been moved to https://github.com/Aiven-Open/commons-for-apache-kafka-connect/
 
 ![Pull Request Workflow](https://github.com/aiven/gcs-connector-for-apache-kafka/workflows/Pull%20Request%20Workflow/badge.svg)