roll: recipes_version.txt roll_commenter: Expand docstring

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/infra/recipes/+/296314
Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Original-Revision: c68ec5d5abf9708454342b4235c7ec86d530aee5
GitOrigin-RevId: f9a9e07d594ae56132736f7b24625a6c47b28275
Change-Id: I2cdef854c84f161777ba5ddc314a1292f1f32540

recipes_version.txt

diff --git a/recipes_version.txt b/recipes_version.txt
index 59b1f02..0e4c770 100644
--- a/recipes_version.txt
+++ b/recipes_version.txt
@@ -1 +1 @@
-89336b7ab106c6b8127e3dc315703e6e67c2f563
+c68ec5d5abf9708454342b4235c7ec86d530aee5