docs: fix broken header image URL in README

The header animation URL had a misspelled username (IvanMurza →
IvanMurzak), pointing at a nonexistent repo, and used a /blob/ path that
serves the HTML page rather than image bytes. Correct the username and add
?raw=true so the gif actually renders. Applied to both the root README and
the identical shipped package README.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: IvanMurzak

README.md

@@ -9,7 +9,7 @@
 [![License](https://img.shields.io/github/license/IvanMurzak/Unity-ImageLoader?label=License&labelColor=333A41)](https://github.com/IvanMurzak/Unity-ImageLoader/blob/main/LICENSE)
 [![Stand With Ukraine](https://raw.githubusercontent.com/vshymanskyy/StandWithUkraine/main/badges/StandWithUkraine.svg)](https://stand-with-ukraine.pp.ua)
 
-![Image Loader Animation](https://github.com/IvanMurza/Unity-ImageLoader/blob/main/docs/img/header.gif 'Image Loading Animation')
+![Image Loader Animation](https://github.com/IvanMurzak/Unity-ImageLoader/blob/main/docs/img/header.gif?raw=true 'Image Loading Animation')
 
 Async image loader with two caching layers for Unity. It supports loading images from web or local paths and provides memory and disk caching to optimize performance. The package includes features for automatic image setting, cancellation handling, error handling, and lifecycle management.
 

Unity-Package/Assets/root/README.md

@@ -10,7 +10,7 @@
 [![License](https://img.shields.io/github/license/IvanMurzak/Unity-ImageLoader?label=License&labelColor=333A41)](https://github.com/IvanMurzak/Unity-ImageLoader/blob/main/LICENSE)
 [![Stand With Ukraine](https://raw.githubusercontent.com/vshymanskyy/StandWithUkraine/main/badges/StandWithUkraine.svg)](https://stand-with-ukraine.pp.ua)
 
-![Image Loader Animation](https://github.com/IvanMurza/Unity-ImageLoader/blob/main/docs/img/header.gif 'Image Loading Animation')
+![Image Loader Animation](https://github.com/IvanMurzak/Unity-ImageLoader/blob/main/docs/img/header.gif?raw=true 'Image Loading Animation')
 
 Async image loader with two caching layers for Unity. It supports loading images from web or local paths and provides memory and disk caching to optimize performance. The package includes features for automatic image setting, cancellation handling, error handling, and lifecycle management.