fix nginx conf typo

assets/vhosts/drupal-ssl.nginxconf

@@ -136,5 +136,5 @@ server {
   }
 
   # website should not be displayed inside a <frame>, an <iframe> or an <object>
-  add_header X-Frame-Options SAMEORIGIN;;
+  add_header X-Frame-Options SAMEORIGIN;
 }

assets/vhosts/drupal.nginxconf

@@ -112,6 +112,6 @@ server {
     }
 
     # website should not be displayed inside a <frame>, an <iframe> or an <object>
-    add_header X-Frame-Options SAMEORIGIN;;
+    add_header X-Frame-Options SAMEORIGIN;
 
 }

assets/vhosts/simple-phpfpm.nginxconf

@@ -37,6 +37,6 @@ server {
   }
 
   # website should not be displayed inside a <frame>, an <iframe> or an <object>
-  add_header X-Frame-Options SAMEORIGIN;;
+  add_header X-Frame-Options SAMEORIGIN;
 
 }