Grammar change in part 10 of RN module

The correct grammar for to express that there's documentation available for building uploading would be ''Expo has documentation for this as well'' instead of ''Expo has *a* documentation for this as well'', the indefinite article ''a'' isn't needed in the sentence since in this context, documentation is an uncountable noun.

Author: verajs

src/content/10/en/part10d.md

@@ -1113,6 +1113,6 @@ Because styled-components processes the style definitions, it is possible to use
 
 That's it, our application is ready. Good job! We have learned many new concepts during our journey such as setting up our React Native application using Expo, using React Native's core components and adding style to them, communicating with the server, and testing React Native applications. The final piece of the puzzle would be to deploy the application to the Apple App Store and Google Play Store.
 
-Deploying the application is entirely <i>optional</i> and it isn't quite trivial, because you also need to fork and deploy the [rate-repository-api](https://github.com/fullstack-hy2020/rate-repository-api). For the React Native application itself, you first need to create either iOS or Android builds by following Expo's [documentation](https://docs.expo.io/distribution/building-standalone-apps/). Then you can upload these builds to either Apple App Store or Google Play Store. Expo has a [documentation](https://docs.expo.io/distribution/uploading-apps/) for this as well.
+Deploying the application is entirely <i>optional</i> and it isn't quite trivial, because you also need to fork and deploy the [rate-repository-api](https://github.com/fullstack-hy2020/rate-repository-api). For the React Native application itself, you first need to create either iOS or Android builds by following Expo's [documentation](https://docs.expo.io/distribution/building-standalone-apps/). Then you can upload these builds to either Apple App Store or Google Play Store. Expo has [documentation](https://docs.expo.io/distribution/uploading-apps/) for this as well.
 
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