refactor: move http2 keyword

Author: Naramsim

Resources/nginx/ssl/ssl.sample.conf

@@ -1,7 +1,8 @@
 # Copy this file to ssl.conf, add certificate and private key to enable ssl
 
-listen 443 ssl http2;
-listen [::]:443 ssl http2;
+listen 443 ssl;
+listen [::]:443 ssl;
+http2 on;
 
 ssl_certificate /ssl/cert.cer;
 ssl_certificate_key /ssl/key.key;