Add warning about customising the output directory

docs/src/reference/config-yaml.md

@@ -98,6 +98,10 @@ To customize the `packageName`, you should edit or add the entry at the path `co
 
 To customize the `codegenOutputDir`, you should edit or add the entry at the path `codegenConfig`/`outputDir`/`android` in `package.json`.
 
+```admonish warning
+Note that for Android the `outputDir` value in `package.json` needs to have a matching entry under `dependency`/`platforms`/`android`/`cmakeListsPath` in `react-native.config.js`. For example, if you set the Android output directory in `package.json` to `android/tmp`, the `cmakeListsPath` value in `react-native.config.js` needs to be set to `tmp/jni/CMakeLists.txt`.
+```
+
 ## `ios`
 
 This is to configure the build steps for the Rust, the bindings, and the turbo-module code for iOS.
@@ -129,6 +133,10 @@ The `directory` is the location of the iOS project, relative to the root of the
 
 To customize the `codegenOutputDir`, you should edit or add the entry at the path `codegenConfig`/`outputDir`/`ios` in `package.json`.
 
+```admonish warning
+Note that for Android the `outputDir` value in `package.json` needs to have a matching entry under `dependency`/`platforms`/`android`/`cmakeListsPath` in `react-native.config.js`. For example, if you set the Android output directory in `package.json` to `android/tmp`, the `cmakeListsPath` value in `react-native.config.js` needs to be set to `tmp/jni/CMakeLists.txt`.
+```
+
 ## `turboModule`
 
 This section configures the location of the Typescript and C++ files generated by the `generate turbo-module` command.