Update the PR to reflect knowledge that the code sample is correct but documentation wrong

Author: StefanWallin

docs/the-new-architecture/pillars-turbomodule.md

@@ -151,24 +151,22 @@ The shared configuration is a `package.json` file used by yarn when installing y
     "react": "*",
     "react-native": "*"
   },
-  "codegenConfig": [
-    {
-      "name": "RTNCalculatorSpec",
-      "type": "modules",
-      "jsSrcsDir": "js",
-      "android": {
-        "javaPackageName": "com.rtncalculator"
-      }
+  "codegenConfig": {
+    "name": "RTNCalculatorSpec",
+    "type": "modules",
+    "jsSrcsDir": "js",
+    "android": {
+      "javaPackageName": "com.rtncalculator"
     }
-  ]
+  }
 }
 ```
 
 The upper part of the file contains some descriptive information like the name of the component, its version, and its source files. Make sure to update the various placeholders which are wrapped in `<>`: replace all the occurrences of the `<your_github_handle>`, `<Your Name>`, and `<your_email@your_provider.com>` tokens.
 
 Then there are the dependencies for this package. For this guide, you need `react` and `react-native`.
 
-Finally, the **Codegen** configuration is specified by the `codegenConfig` field. It contains an array of libraries, each of which is defined by three other fields:
+Finally, the **Codegen** configuration is specified by the `codegenConfig` field. It contains an object that defines the module through four fields:
 
 - `name`: The name of the library. By convention, you should add the `Spec` suffix.
 - `type`: The type of module contained by this package. In this case, it is a Turbo Native Module; thus, the value to use is `modules`.