docs: order the README Who is using OpenDAL list (#4263)

docs: order the README `Who is using OpenDAL` list

README.md

@@ -79,16 +79,16 @@ OpenDAL is an active open-source project. We are always open to people who want
 
 ### Rust Core
 
+- [apache/iceberg-rust](https://github.com/apache/iceberg-rust/): Native Rust implementation of [Apache Iceberg](https://iceberg.apache.org/), the open table format for analytic datasets.
 - [Databend](https://github.com/datafuselabs/databend/): A modern Elasticity and Performance cloud data warehouse.
-- [GreptimeDB](https://github.com/GreptimeTeam/greptimedb): An open-source, cloud-native, distributed time-series database.
 - [deepeth/mars](https://github.com/deepeth/mars): The powerful analysis platform to explore and visualize data from blockchain.
+- [GreptimeDB](https://github.com/GreptimeTeam/greptimedb): An open-source, cloud-native, distributed time-series database.
 - [mozilla/sccache](https://github.com/mozilla/sccache/): `sccache` is [`ccache`](https://github.com/ccache/ccache) with cloud storage
-- [RisingWave](https://github.com/risingwavelabs/risingwave): A Distributed SQL Database for Stream Processing
-- [Vector](https://github.com/vectordotdev/vector): A high-performance observability data pipeline.
 - [OctoBase](https://github.com/toeverything/OctoBase): the open-source database behind [AFFiNE](https://github.com/toeverything/affine), local-first, yet collaborative.
 - [Pants](https://github.com/pantsbuild/pants): A fast, scalable, user-friendly build system for codebases of all sizes.
 - [QuestDB](https://github.com/questdb/questdb): An open-source time-series database for high throughput ingestion and fast SQL queries with operational simplicity.
-- [apache/iceberg-rust](https://github.com/apache/iceberg-rust/): Native Rust implementation of [Apache Iceberg](https://iceberg.apache.org/), the open table format for analytic datasets.
+- [RisingWave](https://github.com/risingwavelabs/risingwave): A Distributed SQL Database for Stream Processing
+- [Vector](https://github.com/vectordotdev/vector): A high-performance observability data pipeline.
 
 ### C Binding