roll: recipes_version.txt bisector: Expand docstring

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/infra/recipes/+/296128
Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Original-Revision: b83bda608975edc1698e671e5779400918d12480
GitOrigin-RevId: 9790705304b671e3f573e052ba57c21d639553a9
Change-Id: Iad78645c9a137fbaa0a38464a2e5536f37a1c04b

recipes_version.txt

diff --git a/recipes_version.txt b/recipes_version.txt
index da9597c..de86e77 100644
--- a/recipes_version.txt
+++ b/recipes_version.txt
@@ -1 +1 @@
-36b2db5b7be6a88a3ee56828f86ca6cfe20bc8a1
+b83bda608975edc1698e671e5779400918d12480