Clean up badge escaping

Author: ericholscher

readthedocs/projects/views/public.py

@@ -113,11 +113,11 @@ def project_badge(request, project_slug, redirect=False):
     try:
         version = Version.objects.get(project__slug=project_slug, slug=version_slug)
     except Version.DoesNotExist:
-        url = 'http://img.shields.io/badge/Docs-Unknown%20Version-yellow.svg?style=' % style
+        url = 'http://img.shields.io/badge/Docs-Unknown%20Version-yellow.svg?style={style}'.format(style=style)
         return _badge_return(redirect, url)
     version_builds = version.builds.filter(type='html', state='finished').order_by('-date')
     if not version_builds.exists():
-        url = 'http://img.shields.io/badge/Docs-No%20Builds-yellow.svg%s' % style
+        url = 'http://img.shields.io/badge/Docs-No%20Builds-yellow.svg?style={style}'.format(style=style)
         return _badge_return(redirect, url)
     last_build = version_builds[0]
     if last_build.success: