Removed the duplicate extension "js" warning from the NGINX configuration. Fixed #1

Signed-off-by: Adriano Cataluddi <acataluddi@gmail.com>

Author: Adriano Cataluddi

admin_manual/installation/nginx-root.conf.sample

@@ -84,7 +84,7 @@ server {
     # only for Nextcloud like below:
     include mime.types;
     types {
-        text/javascript js mjs;
+        text/javascript mjs;
 	application/wasm wasm;
     }
 

admin_manual/installation/nginx-subdir.conf.sample

@@ -45,7 +45,7 @@ server {
     # only for Nextcloud like below:
     include mime.types;
     types {
-        text/javascript js mjs;
+        text/javascript mjs;
 	application/wasm wasm;
     }