fix typo in config comments (#4557)

changelog.d/4557.misc

@@ -0,0 +1 @@
+Fix comment typo in TLS section of config

synapse/config/tls.py

@@ -199,10 +199,10 @@ class TlsConfig(Config):
 
         # If your server runs behind a reverse-proxy which terminates TLS connections
         # (for both client and federation connections), it may be useful to disable
-        # All TLS support for incoming connections. Setting no_tls to False will
+        # All TLS support for incoming connections. Setting no_tls to True will
         # do so (and avoid the need to give synapse a TLS private key).
         #
-        # no_tls: False
+        # no_tls: True
 
         # List of allowed TLS fingerprints for this server to publish along
         # with the signing keys for this server. Other matrix servers that