Merge pull request mongodb#432 from sunfuze/patch-1

修正翻译错误

Author: tjworks

locale/zh/LC_MESSAGES/tutorial/build-indexes-on-replica-sets.po

@@ -37,7 +37,7 @@ msgstr ""
 msgid ""
 "To minimize the impact of building an index on your replica set, use the "
 "following procedure to build indexes:"
-msgstr "为了最小化在您的复制集是创建索引的影响，请遵循如下步骤:"
+msgstr "为了最小化创建索引对在副本集的性能影响，请遵循如下步骤:"
 
 #: ../source/tutorial/build-indexes-on-replica-sets.txt:0
 msgid "See"