[PATCH 3 of 6] annotate: add missing period to help

[timeless]

# HG changeset patch
# User timeless <timeless at mozdev.org>
# Date 1450364087 0
#      Thu Dec 17 14:54:47 2015 +0000
# Node ID 1f41728f543a494617142a71f11668b69122f6b5
# Parent  af702c16922564d7d228492b1192b1505c3aa2d7
annotate: add missing period to help

diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -325,7 +325,7 @@
     """show changeset information by line for each file
 
     List changes in files, showing the revision id responsible for
-    each line
+    each line.
 
     This command is useful for discovering when a change was made and
     by whom.