Don't swap EC if it is the same archive

Fix and reformat README.

BUG=b:402435580
TEST=Ran on dedede/beadrix

Change-Id: I61926f06cb6c60c26b094d61ae5c2a55d4e7f2a7
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/6344690
Reviewed-by: Jason Kusuma <jkusuma@google.com>
Commit-Queue: Jeremy Bettis <jbettis@chromium.org>
Auto-Submit: Jeremy Bettis <jbettis@chromium.org>
Tested-by: Jeremy Bettis <jbettis@chromium.org>
Reviewed-by: Seewai Fu <seewaifu@google.com>
2 files changed