Apply suggestions from code review

Co-Authored-By: Corina <14900841+corinagum@users.noreply.github.com>

CHANGELOG.md

@@ -59,7 +59,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Added
 
 -  Added bubble nub and style options, by [@compulim](https://github.com/compulim), in PR [#2137](https://github.com/microsoft/BotFramework-WebChat/pull/2137)
--  Make thumbnails for uploading GIF/JPEG/PNG and store it in `channelData.attachmentThumbnails`, by [@compulim](https://github.com/compulim), in PR [#2206](https://github.com/microsoft/BotFramework-WebChat/pull/2206), requires modern browsers with following features:
+-  Make thumbnails when uploading GIF/JPEG/PNG and store it in `channelData.attachmentThumbnails`, by [@compulim](https://github.com/compulim), in PR [#2206](https://github.com/microsoft/BotFramework-WebChat/pull/2206), requires modern browsers with following features:
    - [Web Workers API](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API)
    - [`createImageBitmap`](https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/createImageBitmap)
    - [`MessageChannel`](https://developer.mozilla.org/en-US/docs/Web/API/MessageChannel)/[`MessagePort`](https://developer.mozilla.org/en-US/docs/Web/API/MessagePort)

__tests__/setup/pageObjects/sendFile.js

@@ -17,7 +17,7 @@ export default async function sendFile(driver, filename, { waitForSend = true }
   const uploadButton = await getUploadButton(driver);
   const isUnderDocker = !!(await driver.getCapabilities()).get('webdriver.remote.sessionid');
 
-  // The send file function is asynchronous, it don't send immediate until thumbnails are generated.
+  // The send file function is asynchronous, it doesn't send immediately until thumbnails are generated.
   // We will save the numActivities, anticipate for numActivities + 1, then wait until everything is sent
   const numActivities = (await getActivityElements(driver)).length;