Update locale/en/docs/guides/simple-profiling.md

Thanks @Trott #3410 (comment)

Co-authored-by: Rich Trott <rtrott@gmail.com>

Author: pzrq

locale/en/docs/guides/simple-profiling.md

@@ -280,4 +280,4 @@ You may also find [how to create a flame graph][diagnostics flamegraph] helpful.
 
 [profiler inside V8]: https://v8.dev/docs/profile
 [benefits of asynchronous programming]: https://nodesource.com/blog/why-asynchronous
-[diagnostics flamegraph]: https://nodejs.org/en/docs/guides/diagnostics-flamegraph/
+[diagnostics flamegraph]: ./diagnostics-flamegraph/