chore: remove snippet leading whitespace (#289)

Author: chingor13

packages/google-cloud-iot/README.md

@@ -57,19 +57,19 @@ npm install @google-cloud/iot
 ### Using the client library
 
 ```javascript
-  const iot = require('@google-cloud/iot');
-  const client = new iot.v1.DeviceManagerClient();
-
-  async function quickstart() {
-    const projectId = await client.getProjectId();
-    const parent = client.locationPath(projectId, 'us-central1');
-    const [resources] = await client.listDeviceRegistries({parent});
-    console.log(`${resources.length} resource(s) found.`);
-    for (const resource of resources) {
-      console.log(resource);
-    }
+const iot = require('@google-cloud/iot');
+const client = new iot.v1.DeviceManagerClient();
+
+async function quickstart() {
+  const projectId = await client.getProjectId();
+  const parent = client.locationPath(projectId, 'us-central1');
+  const [resources] = await client.listDeviceRegistries({parent});
+  console.log(`${resources.length} resource(s) found.`);
+  for (const resource of resources) {
+    console.log(resource);
   }
-  quickstart();
+}
+quickstart();
 
 ```