Clarify LDAP troubleshooting ldap_search example
A customer noted an error/lack of clarity in the LDAP documentation
with the ldap_search
example. Previously, if taken literally, the
customer may have expected the $
variables to be automatically
replaced or if they paste the exact user_filter
contents the
parentheses would have been incorrect. Let's just simply the filter
and use exactly what's in the configuration.