chore: update CHANGELOG

CHANGELOG.md

@@ -7,7 +7,16 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 ### Added
 
 - Fallback anchor link support when javascript can't execute. ([#5](https://github.com/murtuzaalisurti/back-to-top/pull/5))
-- Customizable button content [https://github.com/murtuzaalisurti/back-to-top/pull/5/commits/83dfe0e2d79dea0d77bf4ffdc4b16c0b073934cd](https://github.com/murtuzaalisurti/back-to-top/pull/5/commits/83dfe0e2d79dea0d77bf4ffdc4b16c0b073934cd).
+- Customizable button content [83dfe0e](https://github.com/murtuzaalisurti/back-to-top/pull/5/commits/83dfe0e2d79dea0d77bf4ffdc4b16c0b073934cd).
+
+```html
+<back-to-top throttle="350">
+    <a href="#" style="position: fixed; left: 1rem; bottom: 2rem;">back-to-top</a>
+    <template>
+        <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 384 512"><path d="M214.6 41.4c-12.5-12.5-32.8-12.5-45.3 0l-160 160c-12.5 12.5-12.5 32.8 0 45.3s32.8 12.5 45.3 0L160 141.2V448c0 17.7 14.3 32 32 32s32-14.3 32-32V141.2L329.4 246.6c12.5 12.5 32.8 12.5 45.3 0s12.5-32.8 0-45.3l-160-160z"/></svg>
+    </template>
+</back-to-top>
+```
 
 ## [v2.0.0](https://www.npmjs.com/package/@murtuzaalisurti/back-to-top/v/2.0.0)