📝 added example for sax_parse

include/nlohmann/json.hpp

@@ -6064,6 +6064,10 @@ class basic_json
 
     @note A UTF-8 byte order mark is silently ignored.
 
+    @liveexample{The example below demonstrates the `sax_parse()` function
+    reading from string and processing the events with a user-defined SAX
+    event consumer.,sax_parse}
+
     @since version 3.2.0
     */
     template <typename SAX>