Summary:This commit makes a change to a comment in `Text.md` related to documenting that all text nodes must be wrapped in a `<Text />` component.
I know this is super small, but it was so easy to handle this on Github that I went ahead and did it.
Closes https://github.com/facebook/react-native/pull/6310
Differential Revision: D3016460
Pulled By: vjeux
fb-gh-sync-id: 9cf861c44961c285971ec22489fbf48c16620a5f
shipit-source-id: 9cf861c44961c285971ec22489fbf48c16620a5f