Add comma

Author: lforst

MIGRATION.md

@@ -6,7 +6,7 @@ Below we will outline all the breaking changes you should consider when upgradin
 TL;DR if you copy & pasted the basic examples from our docs:
 - Our CDN bundles are now ES6 - you will need to [reconfigure your script tags](#renaming-of-cdn-bundles) if you want to keep supporting ES5 and IE11 on the new SDK version.
 - Distributed CommonJS files will be ES6. Use a transpiler if you need to support old node versions.
-- We bumped the TypeScript version we generate our types with to 3.8.3. Please check if your TypeScript projects using TypeScript version 3.7 or lower still compile. Otherwise upgrade your TypeScript version.
+- We bumped the TypeScript version we generate our types with to 3.8.3. Please check if your TypeScript projects using TypeScript version 3.7 or lower still compile. Otherwise, upgrade your TypeScript version.
 - `whitelistUrls` and `blacklistUrls` have been renamed to `allowUrls` and `denyUrls` in the `Sentry.init()` options.
 - The `UserAgent` integration is now called `HttpContext`.