🎨(react) make eof stylesheets consistent

Some older tools misbehave if the last line of data
in a text file is not terminated with a newline.
It makes sure the last line was properly terminated.

packages/react/src/components/Forms/Field/index.scss

@@ -41,5 +41,4 @@
     align-items: flex-start;
     width: auto;
   }
-
-}
+}