Update .env.sample

Author: mattiagiupponi

.env.sample

@@ -183,7 +183,7 @@ GEOIP_PATH=/mnt/volumes/statics/geoip.db
 
 CACHE_BUSTING_STATIC_ENABLED=False
 
-MEMCACHED_ENABLED=False
+MEMCACHED_ENABLED=True
 MEMCACHED_BACKEND=django.core.cache.backends.memcached.PyLibMCCache
 MEMCACHED_LOCATION=memcached:11211
 MEMCACHED_LOCK_EXPIRE=3600