Apply suggestions from code review

Co-authored-by: Jye Cusch <[email protected]>

Author: raksiv

docs/guides/nodejs/nitric-and-pgsql.mdx

@@ -31,15 +31,17 @@ preview:
   - sql-databases
 ```
 
-## Install PostgreSQL client
+## Add a PostgreSQL client
+
+In this guide, we'll use the [node-postgres](https://github.com/brianc/node-postgres) library, but feel free to use another client of your choice and adjust the steps accordingly.
 
 ```bash
 npm install pg
 ```
 
 ## Create a Nitric SQL Database and Connect to it
 
-Establish a connection to a PostgreSQL database using Nitric’s `sql` feature and the `pg` library.
+Use Nitric’s `sql` feature to create a new SQL database, then use connection string and the `pg` library to connect to it.
 
 ```ts title: resources/db.ts
 import { sql } from '@nitric/sdk'
@@ -95,12 +97,10 @@ mainApi.get('/todos', async (ctx) => {
 })
 
 // Insert a new todo
-mainApi.post('/todos/:id', async (ctx) => {
-  const { id } = ctx.req.params
+mainApi.post('/todos/', async (ctx) => {
   const { text } = ctx.req.json()
   const client = await getClient()
-  await client.query('INSERT INTO todos (id, text, done) VALUES ($1, $2, $3)', [
-    parseInt(id),
+  await client.query('INSERT INTO todos (text, done) VALUES ($1, $2)', [
     text,
     false,
   ])
@@ -121,17 +121,10 @@ mainApi.patch('/todos/:id', async (ctx) => {
 mainApi.patch('/todos/:id/toggle', async (ctx) => {
   const { id } = ctx.req.params
   const client = await getClient()
-  const todo = await client.query('SELECT done FROM todos WHERE id = $1', [
-    parseInt(id),
-  ])
-
-  if (todo.rows.length > 0) {
-    const newDone = !todo.rows[0].done
-    await client.query('UPDATE todos SET done = $1 WHERE id = $2', [
-      newDone,
-      parseInt(id),
-    ])
-  }
+  
+  await client.query('UPDATE todos SET done = NOT done WHERE id = $1',
+    [parseInt(id)]
+  );
 })
 
 // Delete a todo
@@ -156,7 +149,7 @@ Using the dashboard, apply your migrations from the databases tab to initialize
 
 ### Add some todos using the Nitric dashboard
 
-Open the local dashboard at <a target="_blank" href="http://localhost:49152">localhost:49152</a>, then navigate to the `POST /todos/{id}` endpoint and fill in an `id` as the path param.
+Open the local dashboard at <a target="_blank" href="http://localhost:49152">localhost:49152</a>, then navigate to the `POST /todos` endpoint.
 
 ![Add id param for creating a todo](/docs/images/guides/nitric-and-pgsql/step-1.png)