Fixing the page layout

Summary:
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**Code formatting**

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Closes https://github.com/facebook/react-native/pull/10917

Differential Revision: D4176170

Pulled By: hramos

fbshipit-source-id: 38a9b6a29e876e66756c3cf9d36585a9836e087e

website/src/react-native/css/react-native.css

@@ -1260,7 +1260,7 @@ div[data-twttr-id] iframe {
 .propType {
   font-weight: normal;
   font-size: 15px;
-  white-space: pre;
+  white-space: pre-wrap;
 }
 
 .compactProps .propType {