chore: update readme

Author: MC-XiaoHei

README.MD

@@ -2,6 +2,24 @@
 
 Documentation for CommandAPI.
 
+## How to build
+
+### Build website
+
+```bash
+yarn install
+```
+
+```bash
+yarn docs:build
+```
+
+### Verify reference codes
+
+```bash
+mvn verify
+```
+
 ## License
 
 All things in this repository **EXPECT** `docs/.vitepress/theme/author/PageAuthors.vue`(this file is licensed under CC BY-NC-SA 4.0 License) is licensed under MIT License.