Clean up warnings in Elytron documentation generation

asciidoctor: WARNING: _elytron/General_Elytron_Architecture.adoc: line 161: id assigned to section already in use: ssl-tls
asciidoctor: WARNING: _elytron/migrate/LDAP_Based_Authentication_Migration.adoc: line 47: id assigned to section already in use: legacy-security-realm
asciidoctor: WARNING: _elytron/migrate/Database_Authentication_Migration.adoc: line 73: id assigned to section already in use: migrated
asciidoctor: WARNING: _elytron/migrate/Kerberos_Based_Authentication_Migration.adoc: line 31: id assigned to section already in use: http-authentication
asciidoctor: WARNING: _elytron/migrate/Kerberos_Based_Authentication_Migration.adoc: line 34: id assigned to section already in use: legacy-security-realm
asciidoctor: WARNING: _elytron/migrate/Application_Client_Migration.adoc: line 12: id assigned to section already in use: original-configuration
asciidoctor: WARNING: _elytron/migrate/Application_Client_Migration.adoc: line 32: id assigned to section already in use: migrated-configuration
asciidoctor: WARNING: _elytron/migrate/Application_Client_Migration.adoc: line 119: id assigned to section already in use: original-configuration-1