doc: add performance note to --enable-source-maps docs

PR-URL: https://github.com/nodejs/node/pull/43817
Reviewed-By: Ben Coe <bencoe@gmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>

doc/api/cli.md

@@ -336,6 +336,11 @@ effort to report stack traces relative to the original source file.
 Overriding `Error.prepareStackTrace` prevents `--enable-source-maps` from
 modifying the stack trace.
 
+Note, enabling source maps can introduce latency to your application
+when `Error.stack` is accessed. If you access `Error.stack` frequently
+in your application, take into account the performance implications
+of `--enable-source-maps`.
+
 ### `--experimental-global-customevent`
 
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