[PATCH evolve-ext] fold: use 'fold', not 'touch', for transaction description

[Martin von Zweigbergk]

# HG changeset patch
# User Martin von Zweigbergk <martinvonz at google.com>
# Date 1481653689 28800
#      Tue Dec 13 10:28:09 2016 -0800
# Node ID 5fc43c4166f8ee4a66ffc29547eba2b9648f4fc1
# Parent  3e270ed7ede06471c71968f148cbfc8e4ea60a54
fold: use 'fold', not 'touch', for transaction description

diff -r 3e270ed7ede0 -r 5fc43c4166f8 hgext/evolve.py
--- a/hgext/evolve.py	Thu Jan 05 01:36:37 2017 -0800
+++ b/hgext/evolve.py	Tue Dec 13 10:28:09 2016 -0800
@@ -3136,7 +3136,7 @@
 
         root, head = _foldcheck(repo, revs)
 
-        tr = repo.transaction('touch')
+        tr = repo.transaction('fold')
         try:
             commitopts = opts.copy()
             allctx = [repo[r] for r in revs]