docs: add missing commas (#9083)

nitpicking
jestjs · Oct 23, 2019 · 8feb9ec · 8feb9ec
1 parent cdf7f37
commit 8feb9ec
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/README.md b/README.md
@@ -172,7 +172,7 @@ Jest can be used in projects that use [webpack](https://webpack.github.io/) to m
 
 ### Using TypeScript
 
-Jest supports TypeScript, via Babel. First make sure you followed the instructions on [using Babel](#using-babel) above. Next install the `@babel/preset-typescript` via `yarn`:
+Jest supports TypeScript, via Babel. First, make sure you followed the instructions on [using Babel](#using-babel) above. Next, install the `@babel/preset-typescript` via `yarn`:
 
 ```bash
 yarn add --dev @babel/preset-typescript