add react to top nav

Author: jderochervlk

src/components/Navigation.res

@@ -515,6 +515,9 @@ let make = (~fixed=true, ~isOverlayOpen: bool, ~setOverlayOpen: (bool => bool) =
             <Link href={`/docs/manual/${version}/api`} className={linkOrActiveApiSubroute(~route)}>
               {React.string("API")}
             </Link>
+            <Link href={`/docs/react/${version}/introduction`} className={linkOrActiveApiSubroute(~route)}>
+              {React.string("React")}
+            </Link>
             <Link
               href="/try"
               className={"hidden xs:block " ++ linkOrActiveLink(~target="/try", ~route)}>