Fixing typo on fragments page.

two

fragments in <em>Activity A</em>, when running on an extra large screen (a tablet, for example).

However, on a normal-sized screen (a phone, for example),

there's not be enough room for both fragments, so <em>Activity A</em> includes only the fragment for

there would not be enough room for both fragments, so <em>Activity A</em> includes only the fragment for

the list of articles, and when the user selects an article, it starts <em>Activity B</em>, which

includes the fragment to read the article. Thus, the application supports both design patterns

suggested in figure 1.</p>