DDSSEC13 — Incorrect property names used

In section 10 and its subsections there are two properties that are named incorreclty in that a "." has been used instead of a "_". Specifically there are places in the section that use the names
"rtps_psk.secret_passphrase" and "rtps_psk.symmetric_cipher_algorithm"

These should be replaced with:
"rtps_psk_secret_passphrase" and
"rtps_psk_symmetric_cipher_algorithm"

Which are the names that appear in the "Configuration Properties" tables in the "Property Name" column.