add docbook tag for dns64 suffix value

add missing docbook formatting.
Note the element is standard, but that can be fixed in bulk later.

diff --git a/doc/arm/Bv9ARM-book.xml b/doc/arm/Bv9ARM-book.xml
index 32e22b5e100fb5101cbc03ea7d336a59dc87a611..3055cd206503ed31b9b676c24b32998f125a8a93 100644 (file)
--- a/doc/arm/Bv9ARM-book.xml
+++ b/doc/arm/Bv9ARM-book.xml
@@ -4965,7 +4965,7 @@ badresp:1,adberr:0,findfail:0,valfail:0]
        <optional> clients { <replaceable>address_match_list</replaceable> }; </optional>
        <optional> mapped { <replaceable>address_match_list</replaceable> }; </optional>
        <optional> exclude { <replaceable>address_match_list</replaceable> }; </optional>
-       <optional> suffix IPv6-address; </optional>
+       <optional> suffix <replaceable>IPv6-address</replaceable>; </optional>
        <optional> recursive-only <replaceable>yes_or_no</replaceable>; </optional>
        <optional> break-dnssec <replaceable>yes_or_no</replaceable>; </optional>
     }; </optional>;