Merge pull request #540 from Fi1osof/patch-1

Error in readme?

docker/README.docker

@@ -1,6 +1,6 @@
 Before you begin
  * copy db schema run ./cp-schema.sh
- * edit turnserver/turnserver.conf according your db selection (mysql or postgresql or redis or mongodb)
+ * edit coturn/turnserver.conf according your db selection (mysql or postgresql or redis or mongodb)
 
 # start