docs: update BACKERS

***NO_CI***

README.md

@@ -148,6 +148,7 @@ Support this project by becoming a sponsor. Your name will show up in the Contri
 - Robert Lanzke ([@winkelement](https://github.com/winkelement))
 - Sam Martin ([@winkelement](https://github.com/ABitMoreDepth))
 - Sean Coffey ([@seanecoffey](https://github.com/seanecoffey))
+- Stephan Kristyn ([@stevek-pro](https://github.com/stevek-pro))
 - Theodore Chu ([@TheodoreChu](https://github.com/TheodoreChu))
 - Tyler Denman ([@tylerguy](https://github.com/tylerguy))
 - Victor Bilgin ([@vbilgin](https://github.com/vbilgin))