Fix formatting.

src/zc/buildout/buildout.py

@@ -383,7 +383,7 @@ class Buildout(UserDict.DictMixin):
         # stated desires in the configuration.
         distributions = ['setuptools', 'zc.buildout']
         if LIBNETWORKCACHE_ENABLED:
-          distributions.append('slapos.libnetworkcache')
+            distributions.append('slapos.libnetworkcache')
         if options.get('offline') == 'true':
             ws = zc.buildout.easy_install.working_set(
                 distributions, options['executable'],