Apply suggestions from code review

Co-authored-by: markzegarelli <[email protected]>

Author: stayseesong

src/protocols/apis-and-extensions/typewriter-v7.md

@@ -3,13 +3,13 @@ title: 'Typewriter v7'
 hidden: true
 ---
 
-Analytics-iOS and Analytics-Android only works with Typewriter v7. If you'd like to upgrade to the latest version of Typewriter, upgrade to [Analytics-Swift](/docs/protocols/apis-and-extensions/typewriter/#swift-quickstart) or [Analytics-Kotlin](/docs/protocols/apis-and-extensions/typewriter/#kotlin-quickstart).
+Analytics-iOS and Analytics-Android support Typewriter v7. To upgrade to the latest version of Typewriter, upgrade to [Analytics-Swift](/docs/protocols/apis-and-extensions/typewriter/#swift-quickstart) or [Analytics-Kotlin](/docs/protocols/apis-and-extensions/typewriter/#kotlin-quickstart).
 
 ## Prerequisites
 
-Typewriter is built using [Node.js](https://nodejs.org/en/), and requires `[email protected]` or later, and `[email protected]` or later to function.
+Typewriter is built with [Node.js](https://nodejs.org/en/), and requires `[email protected]` or later, and `[email protected]` or later.
 
-You can check if you have Node and NPM installed by running the following commands in your command-line window:
+Run the following commands to verify your installed versions of Node and NPM:
 
 ```sh
 $ node --version
@@ -22,7 +22,7 @@ $ npx --version
 6.9.0
 ```
 
-If you don't have these, [you'll need to install `node`](https://nodejs.org/en/download/package-manager). Installing `node` also installs `npm` and `npx` for you. If you're on macOS, you can install it with [Homebrew](https://brew.sh/):
+If you don't have these, [install `node`](https://nodejs.org/en/download/package-manager). Installing `node` also installs the`npm` and `npx` package managers . If you're on macOS, you can install it with [Homebrew](https://brew.sh/):
 
 ```sh
 $ brew install node

src/protocols/apis-and-extensions/typewriter.md

@@ -43,7 +43,7 @@ You can use this with a test suite to automatically fail your unit tests if the
 
 ![Example unit tests failing because of violations](images/typewriter-test-suite.png)
 
-If you're using a statically typed language (such as TypeScript, Java, Objective-C, Swift), then you also get access to compile-time warnings about your instrumentation:
+If you use a statically typed language (such as TypeScript, Java, Objective-C, or Swift), you get access to compile-time warnings about your instrumentation:
 
 ![Example compile-time validation warnings](images/typewriter-compile-time-warnings.png)