chore: adding Linkedin follow page

README.md

@@ -25,18 +25,21 @@
 ![Commit Activity][commit-activity-badge]
 [![Open Issues][open-issues-badge]][open-issues-url]
 [![Discord chat][discord-badge]][discord-url]
+[![Linkedin][linkedin-badge]][linkedin-url]
 
 [crates-badge]: https://img.shields.io/crates/v/datafusion.svg
 [crates-url]: https://crates.io/crates/datafusion
 [license-badge]: https://img.shields.io/badge/license-Apache%20v2-blue.svg
 [license-url]: https://github.com/apache/datafusion/blob/main/LICENSE.txt
 [actions-badge]: https://github.com/apache/datafusion/actions/workflows/rust.yml/badge.svg
 [actions-url]: https://github.com/apache/datafusion/actions?query=branch%3Amain
-[discord-badge]: https://img.shields.io/discord/885562378132000778.svg?logo=discord&style=flat-square
+[discord-badge]: https://img.shields.io/badge/Chat-Discord-purple
 [discord-url]: https://discord.com/invite/Qw5gKqHxUM
 [commit-activity-badge]: https://img.shields.io/github/commit-activity/m/apache/datafusion
 [open-issues-badge]: https://img.shields.io/github/issues-raw/apache/datafusion
 [open-issues-url]: https://github.com/apache/datafusion/issues
+[linkedin-badge]: https://img.shields.io/badge/Follow-Linkedin-blue
+[linkedin-url]: https://www.linkedin.com/company/apache-datafusion/
 
 [Website](https://datafusion.apache.org/) |
 [API Docs](https://docs.rs/datafusion/latest/datafusion/) |