[css-device-adapt] grammar

Author: frivoal

css-device-adapt/Overview.bs

@@ -137,7 +137,7 @@ on all browsers, not only mobile ones.
 However, if support is only available on mobile browsers for a significant time,
 there is a risk that authors would write ''@viewport'' rules that work on mobile
 but do the wrong if applied by a desktop browser.
-This would make it difficult to later add support ''@viewport'' in desktop browsers.</strong>
+This would make it difficult to later add support for ''@viewport'' in desktop browsers.</strong>
 <p>An example of such misguided use would be to write <code highlight="css">@viewport { width: 320px; }</code>
 instead of <code highlight="css">@viewport { width: auto; }</code>
 to make a document “mobile friendly”.