nginx: Fix indentation

hosts/architect/nginx.nix

@@ -49,18 +49,18 @@
       resolver local=on ipv6=off;
 
       init_worker_by_lua_block {
-      function check_role (res, role)
-        if res.user.roles == nil then
-          return false
-        end
-
-        for _,v in pairs(res.user.roles) do
-          if string.lower(v) == role then
-            return true
+        function check_role (res, role)
+          if res.user.roles == nil then
+            return false
           end
-        end
 
-        return false
+          for _,v in pairs(res.user.roles) do
+            if string.lower(v) == role then
+              return true
+            end
+          end
+
+          return false
         end
       }
     '';