Feature/add LinkedIn page to README.md (#4476)

* Add LinkedIn page

README.md

@@ -7,7 +7,7 @@
 **Open Source Wealth Management Software**
 
 [**Ghostfol.io**](https://ghostfol.io) | [**Live Demo**](https://ghostfol.io/en/demo) | [**Ghostfolio Premium**](https://ghostfol.io/en/pricing) | [**FAQ**](https://ghostfol.io/en/faq) |
-[**Blog**](https://ghostfol.io/en/blog) | [**Slack**](https://join.slack.com/t/ghostfolio/shared_invite/zt-vsaan64h-F_I0fEo5M0P88lP9ibCxFg) | [**X**](https://x.com/ghostfolio_)
+[**Blog**](https://ghostfol.io/en/blog) | [**LinkedIn**](https://www.linkedin.com/company/ghostfolio) | [**Slack**](https://join.slack.com/t/ghostfolio/shared_invite/zt-vsaan64h-F_I0fEo5M0P88lP9ibCxFg) | [**X**](https://x.com/ghostfolio_)
 
 [![Shield: Buy me a coffee](https://img.shields.io/badge/Buy%20me%20a%20coffee-Support-yellow?logo=buymeacoffee)](https://www.buymeacoffee.com/ghostfolio)
 [![Shield: Contributions Welcome](https://img.shields.io/badge/Contributions-Welcome-limegreen.svg)](#contributing) [![Shield: Docker Pulls](https://img.shields.io/docker/pulls/ghostfolio/ghostfolio?label=Docker%20Pulls)](https://hub.docker.com/r/ghostfolio/ghostfolio)