config.txt: fix invalid formattinc

diff --git a/doc/config.txt b/doc/config.txt
index 3333b9616478d56cb2e03d362b496cc8d05622ba..1709bab82565443874d41637b38c9a4fd523359f 100644 (file)
--- a/doc/config.txt
+++ b/doc/config.txt
@@ -94,7 +94,7 @@ Default: not set.
 
 How to authenticate users.
 
-md5:
+md5::
       Use MD5-based password check. `auth_file` may contain both MD5-encrypted
       or plain-text passwords.  This is the default authentication method.