Add missing quotes in an example (#3081)

patiencedaur · web-flow · commit 16a4d6302f5e · 2022-08-10T12:23:07.000+03:00
diff --git a/doc/reference/reference_lua/datetime/new.rst b/doc/reference/reference_lua/datetime/new.rst
@@ -119,7 +119,7 @@ datetime.new()
                     year = 2021,
 
                     tzoffset = 60,
-                    tz = Europe/Moscow
+                    tz = 'Europe/Moscow'
                     }
         ---
         - 2021-08-20T18:25:20.123456789 Europe/Moscow
