Fix api docs loadconfigfile (#3757)

* fix api docs for loadConfigFile

* fix linting

* fix to use optionsObj not options

* fix text to say objects not object

docs/02-javascript-api.md

@@ -213,23 +213,26 @@ const rollup = require('rollup');
 // load the config file next to the current script;
 // the provided config object has the same effect as passing "--format es"
 // on the command line and will override the format of all outputs
-loadConfigFile(path.resolve(__dirname, 'rollup.config.js'), { format: 'es' })
-  .then(async ({options, warnings}) => {
-    // "warnings" wraps the default `onwarn` handler passed by the CLI.
-    // This prints all warnings up to this point:
-    console.log(`We currently have ${warnings.count} warnings`);
-
-    // This prints all deferred warnings
-    warnings.flush();
-
-    // options is an "inputOptions" object with an additional "output"
-    // property that contains an array of "outputOptions".
-    // The following will generate all outputs and write them to disk the same
-    // way the CLI does it:
-    const bundle = await rollup.rollup(options);
-    await Promise.all(options.output.map(bundle.write));
-
-    // You can also pass this directly to "rollup.watch"
-    rollup.watch(options);
-  })
-```
+loadConfigFile(path.resolve(__dirname, 'rollup.config.js'), { format: 'es' }).then(
+	async ({ options, warnings }) => {
+		// "warnings" wraps the default `onwarn` handler passed by the CLI.
+		// This prints all warnings up to this point:
+		console.log(`We currently have ${warnings.count} warnings`);
+
+		// This prints all deferred warnings
+		warnings.flush();
+
+		// options is an array of "inputOptions" objects with an additional "output"
+		// property that contains an array of "outputOptions".
+		// The following will generate all outputs for all inputs, and write them to disk the same
+		// way the CLI does it:
+		for (const optionsObj of options) {
+			const bundle = await rollup.rollup(optionsObj);
+			await Promise.all(optionsObj.output.map(bundle.write));
+		}
+
+		// You can also pass this directly to "rollup.watch"
+		rollup.watch(options);
+	}
+);
+```