Fix gssproxy.conf manpage about comments

The manpage was implying it was possible to have comments at the end of
configuration lines, while SSSD's ini parsing library used by gssproxy
supports full line comments only.

Signed-off-by: Julien Rische <jrische@redhat.com>

Author: jrisc

man/gssproxy.conf.5.xml

@@ -27,7 +27,7 @@
         <para>
             GSS-Proxy conf files are classic ini-style configuration files.
             Each option consist of a key = value pair.
-            Any characters behind '#' will be treated as comments and will be ignored.
+            Any line starting with '#' will be treated as comment and will be ignored.
             Boolean parameters accept "1", "true", "yes" and "on" as
             positive values. All other values will be considered as negative
             values.