Fix view name in oscar.apps.search.urls.

SuggestionsView is incorrectly named in oscar.apps.search.urls.

I didn't use this view, an import error occured when my application searched all urls.py in every installed app for javascript settings (https://github.com/pozytywnie/django-javascript-settings). It's very special case, but the same error would occur if I just used those urls.

I know that this file would likely be revamped in 0.6, but I'd like to use this change right now in my project.