🧑‍💻 Update documentation overview and author description

Author: dumindu

content/en/docs/_overview.md

@@ -5,8 +5,10 @@ aliases:
 - "/docs"
 ---
 
-This is based on the posts I wrote on **Medium**, https://medium.com/learning-rust
+This publication has its origins in the posts I authored on Medium at https://medium.com/learning-rust. However, please note that I have ceased updating the Medium posts. All current and future updates, new content, code, and grammar fixes will be exclusively maintained and released here, https://learning-rust.github.io. 
 
 [![Rust Playground](/docs/learning_rust_medium.png)](https://medium.com/learning-rust)
 
-> 🐣 I am a **Sri Lankan** 🇱🇰 Web Developer who lives in **Singapore** 🇸🇬. So I am not a native English speaker and just learning Rust, If you found any mistake or something need to be changed, even a spelling or a grammar mistake, feel free to create a pull request. Thanks.
+> 🧑‍💻 I am an expat working in Singapore as a Go Backend and DevOps Engineer. Feel free to reach out if you find any mistakes or anything that needs to be changed, including spelling or grammar errors. Alternatively, you can create a pull request, open an issue, or [share your awesome ideas in this gist](https://gist.github.com/dumindu/00a0be2d175ed5ff3bc3c17bbf1ca5b6). Good luck with learning Rust!
+
+[![buymeacoffee](https://img.shields.io/badge/Buy%20me%20a%20coffee-dumindu-FFDD00?style=for-the-badge&logo=buymeacoffee&logoColor=ffffff&labelColor=333333)](https://www.buymeacoffee.com/dumindu)