docs - correct gpinitsystem use of HBA_HOSTNAME parameter.

gpdb-doc/dita/utility_guide/admin_utilities/gpinitsystem.xml

@@ -503,15 +503,14 @@ declare -a MIRROR_ARRAY=(
                 </plentry>
                 <plentry>
                     <pt>HBA_HOSTNAMES</pt>
-                    <pd><b>Optional.</b> This parameter controls whether Greenplum Database
-                        utilities use IP addresses or host names in the <codeph>pg_hba.conf</codeph>
-                        file when updating the file with addresses that can connect to Greenplum
-                        Database. The default value is <codeph>0</codeph>, the utilities use IP
-                        addresses when updating the file. When initializing a Greenplum Database
-                        system, specify <codeph>HBA_HOSTNAMES=1</codeph> to have the utilities use
-                        host names in the <codeph>pg_hba.conf</codeph> file. This option is set when
-                        the system is initialized and cannot be changed after the system is
-                        initialized. </pd>
+                    <pd><b>Optional.</b> This parameter controls whether
+                            <codeph>gpinitsystem</codeph> use IP addresses or host names in the
+                            <codeph>pg_hba.conf</codeph> file when updating the file with addresses
+                        that can connect to Greenplum Database. The default value is
+                            <codeph>0</codeph>, the utility uses IP addresses when updating the
+                        file. When initializing a Greenplum Database system, specify
+                            <codeph>HBA_HOSTNAMES=1</codeph> to have the utility use host names in
+                        the <codeph>pg_hba.conf</codeph> file.</pd>
                     <pd>For information about how Greenplum Database resolves host names in the
                             <codeph>pg_hba.conf</codeph> file, see <xref
                             href="../../admin_guide/client_auth.xml#topic1"/>.</pd>