2505: added documentation

Author: gkatzioura

website/docs/maintenance/filesystems/overview.md

@@ -36,6 +36,8 @@ The Fluss project supports the following file systems:
 
 - **[AWS S3](s3.md)** is supported by `fluss-fs-s3` and registered under the `s3://` URI scheme.
 
+- **[Azure Blob Storage](azure.md)** is supported by `fluss-fs-azure` and registered under the `abfs://`,`abfss://`,`wasb://`,`wasbs://`, URI scheme.
+
 - **[HuaweiCloud OBS](obs.md)** is supported by `fluss-fs-obs` and registered under the `obs://` URI scheme. Please make sure to [manually install the OBS plugin](obs.md#install-obs-plugin-manually).
 
 The implementation is based on [Hadoop Project](https://hadoop.apache.org/) but is self-contained with no dependency footprint.