[PATCH 1 of 4] tests: clarify a comment in test-rebase-obsolete.t

[Denis Laxalde]

# HG changeset patch
# User Denis Laxalde <denis at laxalde.org>
# Date 1510424611 -3600
#      Sat Nov 11 19:23:31 2017 +0100
# Node ID 8ee0103a7206e30a08c1587962122b5cb239bc9b
# Parent  407ec7f3ff02ae357074104fe892adc2b12b42a7
# EXP-Topic rebase-obsolete
tests: clarify a comment in test-rebase-obsolete.t

diff --git a/tests/test-rebase-obsolete.t b/tests/test-rebase-obsolete.t
--- a/tests/test-rebase-obsolete.t
+++ b/tests/test-rebase-obsolete.t
@@ -361,8 +361,8 @@ collapse rebase
 Rebase set has hidden descendants
 ---------------------------------
 
-We rebase a changeset which has a hidden changeset. The hidden changeset must
-not be rebased.
+We rebase a changeset which has hidden descendants. Hidden changesets must not
+be rebased.
 
   $ hg clone base hidden
   updating to branch default