tls: fix missing TLSv1.2+ parameter documentation

src/modules/tls/doc/params.xml

@@ -19,6 +19,12 @@
 		Sets the TLS protocol method. Possible values are:
 	</para>
 	<itemizedlist>
+			<listitem>
+				<para>
+				<emphasis>TLSv1.2+</emphasis> - TLSv1.2 or newer (TLSv1.3, ...)
+				connections are accepted (available starting with openssl/libssl v1.1.1)
+				</para>
+			</listitem>
 			<listitem>
 				<para>
 				<emphasis>TLSv1.2</emphasis> - only TLSv1.2 connections are accepted