Simplify readme avatar URLs

readme.md

@@ -452,7 +452,7 @@ Bear in mind, if you send an `if-modified-since` header and receive a `304 Not M
 
 ## Created by
 
-[![Sindre Sorhus](https://avatars.githubusercontent.com/u/170270?v=3&s=100)](https://sindresorhus.com) | [![Vsevolod Strukchinsky](https://avatars.githubusercontent.com/u/365089?v=3&s=100)](https://github.com/floatdrop) | [![Alexander Tesfamichael](https://avatars.githubusercontent.com/u/2011351?v=3&s=100)](https://alextes.me)
+[![Sindre Sorhus](https://github.com/sindresorhus.png?size=100)](https://sindresorhus.com) | [![Vsevolod Strukchinsky](https://github.com/floatdrop.png?size=100)](https://github.com/floatdrop) | [![Alexander Tesfamichael](https://github.com/AlexTes.png?size=100)](https://github.com/AlexTes)
 ---|---|---
 [Sindre Sorhus](https://sindresorhus.com) | [Vsevolod Strukchinsky](https://github.com/floatdrop) | [Alexander Tesfamichael](https://alextes.me)