DOCSP-32718: insertOne comments (mongodb#758)

* DOCSP-32718: insertOne comments

* addressing feedback

Author: norareidy

source/code-snippets/usage-examples/insertOne.js

@@ -3,22 +3,29 @@ import { MongoClient } from "mongodb";
 // Replace the uri string with your MongoDB deployment's connection string.
 const uri = "<connection string uri>";
 
+// Create a new client and connect to MongoDB
 const client = new MongoClient(uri);
 
 async function run() {
   try {
+    // Connect to the "insertDB" database and access its "haiku" collection
     const database = client.db("insertDB");
     const haiku = database.collection("haiku");
-    // create a document to insert
+    
+    // Create a document to insert
     const doc = {
       title: "Record of a Shriveled Datum",
       content: "No bytes, no problem. Just insert a document, in MongoDB",
     }
+    // Insert the defined document into the "haiku" collection
     const result = await haiku.insertOne(doc);
 
+    // Print the ID of the inserted document
     console.log(`A document was inserted with the _id: ${result.insertedId}`);
   } finally {
+     // Close the MongoDB client connection
     await client.close();
   }
 }
+// Run the function and handle any errors
 run().catch(console.dir);