main: add warning sign

Signed-off-by: lecaros <[email protected]>

Author: lecaros

README.md

@@ -1,8 +1,11 @@
 # Kubernetes Logging with Fluent Bit
 
-> This repository is no longer maintained. Please use the [charts](https://github.com/fluent/helm-charts/tree/main/charts/fluent-bit) from the [Fluent Bit Helm Chart](https://github.com/fluent/helm-charts) project.
+> :warning: This repository is no longer maintained. Please use the [charts](https://github.com/fluent/helm-charts/tree/main/charts/fluent-bit) from the [Fluent Bit Helm Chart](https://github.com/fluent/helm-charts) project.
 > If you need any further assistance, reach out to the community on the [available channels](https://fluentbit.io/community/)
 
+
+## Overview
+
 [Fluent Bit](http://fluentbit.io) is a lightweight and extensible __Log and Metrics Processor__ that comes with full support for Kubernetes:
 
 - Read Kubernetes/Docker log files from the file system or through systemd Journal