fix(caddy): explicitly specify https:// scheme for port 8443 loopback block

Author: dmichael-fastly

Caddyfile

@@ -355,7 +355,7 @@ Policy: https://github.com/fastly/fastly-log-analytics/blob/main/SECURITY.md
 # enabling the browser to negotiate HTTP/2 (multiplexing) over the tunnel.
 # This prevents client-side TCP connection starvation (tab freezing) while keeping
 # admin access bound strictly to the local loopback/SSH boundary.
-localhost:8443, 127.0.0.1:8443 {
+https://localhost:8443, https://127.0.0.1:8443 {
 	tls internal
 
 	encode zstd gzip