Update README.md

Author: k9p5

README.md

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-# Diffusion Studio - A browser based video processing framework 🚀
+# Diffusion Studio - A browser based video editing framework 🚀
 
 Yes that's right, DS does not require a backend! This is made possible by bleeding edge browser APIs such as WebGPU, WebCodecs and WebAssembly resulting in a blazingly fast render performance 🏎️ (fastest in town).