Update rabbitmq.conf.example

(cherry picked from commit 3e88eb1)

Author: charltonliv

deps/rabbit/docs/rabbitmq.conf.example

@@ -1087,7 +1087,7 @@
 # auth_ldap.ssl_options.keyfile = /path/to/client_key.pem
 
 ## Sets Server Name Indication for LDAP connections.
-## If an LDAP server host is availble via multiple domain names, set this value
+## If an LDAP server host is available via multiple domain names, set this value
 ## to the preferred domain name target LDAP server
 # auth_ldap.ssl_options.sni = ldap.identity.eng.megacorp.local