[NGINX] Make API docs accessible using /api/

data/conf/nginx/site.conf

@@ -76,6 +76,10 @@ server {
     rewrite ^(.*)$ $1.php last;
   }
 
+  location /api/ {
+    try_files /_apidocs.html;
+  }
+
   location ~ ^/api/v1/(.*)$ {
     try_files $uri $uri/ /json_api.php?query=$1;
   }