fix: updated mostlychris to use new youtube handles

README.md

@@ -334,7 +334,7 @@ _Sit back, relax, watch, and learn._
 - [BeardedTinker](https://www.youtube.com/channel/UCuqokNoK8ZFNQdXxvlE129g) - Tutorials & 3D printing.
 - [Smart Home Junkie](https://www.youtube.com/channel/UCVtQ4AOSmCFUuvixddYiSxw/) - How-to videos and tutorials for starters and advanced users.
 - [Everything Smart Home](https://www.youtube.com/c/EverythingSmartHome) - Focuses on Smart Home, Home Automation, general tech reviews, guides, and step-by-step DIY projects.
-- [mostlychris](https://www.youtube.com/channel/UCXEa_Gzl2zjhb7K6xflyrWQ) - Home Automation, Smart Home, IoT, Technology, Home Assistant. 
+- [mostlychris](https://www.youtube.com/@mostlychris) - Home Automation, Smart Home, IoT, Technology, Home Assistant. 
 
 ### Podcasts