Update hermes.md

Author: sahrens

docs/hermes.md

@@ -7,7 +7,7 @@ title: Enabling Hermes
   <img width="300" height="300" style="float: right; margin: -30px 4px 0;" src="/react-native/docs/assets/HermesLogo.svg"/>
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-[Hermes](https://hermesengine.dev) is an open-source JavaScript engine optimized for running React Native apps on Android. For many apps, simply enabling Hermes will result in improved start-up time, decreased memory usage and smaller app size. At this time Hermes is an **opt-in** React Native feature, and this guide explains how to enable it.
+[Hermes](https://hermesengine.dev) is an open-source JavaScript engine optimized for running React Native apps on Android. For many apps, simply enabling Hermes will result in improved start-up time, decreased memory usage, and reduced app size. At this time Hermes is an **opt-in** React Native feature, and this guide explains how to enable it.
 
 First, ensure you're using at least version 0.60.2 of React Native. If you're upgrading an existing app ensure everything works before trying to switch to Hermes.