docs: update guide

docs/guide-zh-CN.md

@@ -80,6 +80,12 @@ plugins {
 
 上述配置完成后，运行一次 Gradle Sync。
 
+**可能遇到的问题**
+
+如果在运行 Gradle Sync 后失败并报错 `Cannot have abstract method KotlinTarget. withSourcesJar()`，这可能是你当前项目的 Kotlin 插件版本的问题。
+
+此问题为 Kotlin 插件从 `1.8.0+` → `1.9.0+` 升级导致的错误，解决方案为将 Kotlin 插件的版本修改为 `1.9.0+`。
+
 **特别注意**
 
 `SweetDependency` 会替换 `pluginManagement` 和 `dependencyResolutionManagement` 中设置的存储库，如果你手动在这些方法块中配置了存储库，它们都将会无效。

docs/guide.md

@@ -81,6 +81,15 @@ Please replace `<version>` in the above code with the latest version in
 
 After the above configuration is complete, run Gradle Sync once.
 
+**Possible Problems**
+
+If running Gradle Sync fails with the error `Cannot have abstract method KotlinTarget. withSourcesJar()`,
+this may be a problem with the Kotlin plugin version of your current project.
+
+This problem is an error caused by upgrading the Kotlin plugin from `1.8.0+` → `1.9.0+`.
+
+The solution is to modify the version of the Kotlin plugin to `1.9.0+`.
+
 **Pay Attention**
 
 `SweetDependency` will replace the repositories set in `pluginManagement` and `dependencyResolutionManagement`,