crypto: fix comment in ByteSource

PR-URL: https://github.com/nodejs/node/pull/35972
Refs: https://github.com/nodejs/node/pull/35821


Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: Zeyu Yang <himself65@outlook.com>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Ricky Zhou <0x19951125@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>