update README.md

Author: 0x3f3f3f3fun

README.md

@@ -30,6 +30,7 @@
 - [Visual Results On Real-world Images](#visual_results)
 - [TODO](#todo)
 - [Installation](#installation)
+- [Quick Start](#quick-start)
 - [Pretrained Models](#pretrained_models)
 - [Inference](#inference)
 - [Train](#train)