Making the comments clearer.

Author: davidjarzebowski

backup.config-example

@@ -39,7 +39,9 @@ GHE_NUM_SNAPSHOTS=10
 #GHE_EXTRA_SSH_OPTS=""
 
 # Any extra options passed to the rsync command.
-# As of April 2023 the --trust-sender flag is required. See docs/requirements.md#update-april-2023 for details on this change.
+# As of April 2023 the minimum version of rsync is 3.2.5 and 
+# the --trust-sender flag is required.
+# See docs/requirements.md#update-april-2023 for details on this change.
 GHE_EXTRA_RSYNC_OPTS="--trust-sender"