Update README.md

Author: sf-jeff-lim

README.md

@@ -1,4 +1,4 @@
-# SendBird Calls for JavaScript Quickstart
+# Sendbird Calls for JavaScript Quickstart
 
 ![Platform](https://img.shields.io/badge/platform-JAVASCRIPT-orange.svg)
 ![Languages](https://img.shields.io/badge/language-JAVASCRIPT-orange.svg)
@@ -31,7 +31,7 @@ The minimum requirements for Calls SDK for Javascript sample are:
 
 If you would like to try the sample app specifically fit to your usage, you can do so by following the steps below. 
 
-### Create a SendBird application
+### Create a Sendbird application
 
 1. Login or Sign-up for an account on [Sendbird Dashboard](https://dashboard.sendbird.com).
 2. Create or select an application on the dashboard.
@@ -40,7 +40,7 @@ If you would like to try the sample app specifically fit to your usage, you can
 
 ### Create test users
 
-1. On the SendBird dashboard, navigate to the **Users** menu.
+1. On the Sendbird dashboard, navigate to the **Users** menu.
 2. Create at least two new users: one as a `caller`, and the other as a `callee`.
 3. Note the `user_id` of each user for future reference.