[roll] Roll fuchsia [assembly] Fixes for bootfs_files_for_assembly

Fix the comments.
Not all distribution entries have source+destination.

Original-Bug: 117839
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/781827
Original-Revision: 7d44157c0693c23d07d5ffbc412ed281092e519a
GitOrigin-RevId: c76cf426f41772a1c42e72531220b302bf641aa5
Change-Id: I3fd3b99ab38abf9ba2612e9c68bb1a5233d22e55
diff --git a/stem b/stem
index f96ddaf..53b14d5 100644
--- a/stem
+++ b/stem
@@ -11,7 +11,7 @@
              githooks="integration/git-hooks"
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="762dfe7fc199fc7e87c89b517948a16352bcf522"/>
+             revision="7d44157c0693c23d07d5ffbc412ed281092e519a"/>
   </projects>
   <hooks>
     <hook name="install-environment"