docs(readme):fix the typo

README.md

@@ -23,7 +23,8 @@ It offers a variety of features:
 * Various message filter mechanics such as SQL and Tag
 * Docker images for isolated testing and cloud isolated clusters
 * Feature-rich administrative dashboard for configuration, metrics and monitoring
-* Authentication and authorisation
+* Authentication and authorization
+* Free open source connectors, for both sources and sinks
 
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