Add no redirect to HTTPS to resolve #2416 (#2432)

5.0/en/0x21-V13-API.md

@@ -21,6 +21,7 @@ This is a placeholder for future documentation requirements.
 | **13.1.5** | [DELETED, INSUFFICIENT IMPACT] | | | | |
 | **13.1.6** | [MODIFIED, MOVED FROM 13.2.6, LEVEL L2 > L3] Verify that per-message digital signatures are used to provide additional assurance on top of transport protections for requests or transactions which are highly sensitive or which traverse a number of systems. | | | ✓ | 345 |
 | **13.1.7** | [MODIFIED, MOVED FROM 14.4.1] Verify that every HTTP response with a message body contains a Content-Type header field that matches the actual content of the response, including the charset parameter to specify safe character encoding (e.g., UTF-8, ISO-8859-1) according to IANA Media Types, such as "text/", "/+xml" and "/xml". | ✓ | ✓ | ✓ | 173 |
+| **13.1.8** | [ADDED] Verify that HTTPS-based endpoints will only respond to non-encrypted HTTP requests with an error or will not respond at all. Responding with an automatic redirect to the HTTPS endpoint may lead to clients accidentally sending data over non-encrypted HTTP, but this is not being discovered. | | ✓ | ✓ | |
 
 ## V13.2 Web Services