[PATCH 2 of 2 evolve-ext] evolve: fix grammar in a comment

[Greg Ward]

# HG changeset patch
# User Greg Ward <greg at gerg.ca>
# Date 1397585207 14400
#      Tue Apr 15 14:06:47 2014 -0400
# Node ID 8b4b1d991cc82fb78c3b6096166e3b00023d4aa6
# Parent  a94a4c957ab76ed71974ab7fd3b527472e2b84cc
evolve: fix grammar in a comment

diff --git a/hgext/evolve.py b/hgext/evolve.py
--- a/hgext/evolve.py
+++ b/hgext/evolve.py
@@ -1672,7 +1672,7 @@
         for p in sortedrevs(revs):
             cp = repo[p]
             if not cp.mutable():
-                # note: create marker would had raise something anyway
+                # note: createmarkers() would have raised something anyway
                 raise util.Abort('cannot prune immutable changeset: %s' % cp,
                                  hint='see "hg help phases" for details')
             precs.append(cp)