Update README.md

Author: adia-dev

README.md

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 Chroma is a Zig library for advanced ANSI color and text styling in terminal output. It allows developers to dynamically format strings with embedded placeholders (e.g. `{red}`, `{bold}`, `{fg:255;100;0}` for true color) and converts them into ANSI escape sequences. This makes it easy to apply complex styles, switch between foreground/background colors, and reset formatting on the fly—all at compile time.
 
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 ## ✨ Features
 
 - **Simple, Readable Syntax:**