Update README.md

ppstructure/layout/README.md

@@ -3,7 +3,7 @@ English | [简体中文](README_ch.md)
 # Layout analysis
 
 - [1. Introduction](#1-Introduction)
-- [2. Quick start](#3-Quick-start)
+- [2. Quick start](#2-Quick-start)
 - [3. Install](#3-Install)
   - [3.1 Install PaddlePaddle](#31-Install-paddlepaddle)
   - [3.2 Install PaddleDetection](#32-Install-paddledetection)
@@ -12,11 +12,11 @@ English | [简体中文](README_ch.md)
   - [4.2 More datasets](#42-More-datasets)
 - [5. Start training](#5-Start-training)
   - [5.1 Train](#51-Train)
-  - [5.2 FGD Distillation training](#52-FGD-Distillation-training)
+  - [5.2 FGD Distillation training](#52-Fgd-distillation-training)
 - [6. Model evaluation and prediction](#6-Model-evaluation-and-prediction)
   - [6.1 Indicator evaluation](#61-Indicator-evaluation)
   - [6.2 Test layout analysis results](#62-Test-layout-analysis-results)
-- [7 Model export and inference](#7-Model-export-and-inference)
+- [7. Model export and inference](#7-Model-export-and-inference)
   - [7.1 Model export](#71-Model-export)
   - [7.2 Model inference](#72-Model-inference)