activities: Fixed typo in contract interface method.

src/main/java/com/owncloud/android/ui/activities/ActivitiesContract.java

@@ -20,7 +20,7 @@ public interface ActivitiesContract {
     }
 
     interface ActionListener {
-        void loadActivites(String pageUrl);
+        void loadActivities(String pageUrl);
         void openActivity(String fileUrl, BaseActivity baseActivity, boolean isSharingSupported);
     }
 }

src/main/java/com/owncloud/android/ui/activities/ActivitiesPresenter.java

@@ -27,7 +27,7 @@ public class ActivitiesPresenter implements ActivitiesContract.ActionListener {
     }
 
     @Override
-    public void loadActivites(String pageUrl) {
+    public void loadActivities(String pageUrl) {
         mActivitiesView.setProgressIndicatorState(true);
         mActivitiesRepository.getActivities(pageUrl, new ActivitiesRepository.LoadActivitiesCallback() {
             @Override