Update map-reduce-examples.po

Author: tomliugen

locale/zh/LC_MESSAGES/tutorial/map-reduce-examples.po

@@ -13,7 +13,7 @@ msgstr ""
 
 #: ../source/tutorial/map-reduce-examples.txt:3
 msgid "Map-Reduce Examples"
-msgstr ""
+msgstr "Map-Reduce 例子"
 
 #: ../source/tutorial/map-reduce-examples.txt:7
 msgid ""
@@ -34,7 +34,6 @@ msgstr ""
 
 #: ../source/includes/examples-map-reduce.rst:21
 msgid "Return the Total Price Per Customer"
-msgstr ""
 msgstr "计算每个顾客的总价格"
 
 #: ../source/includes/examples-map-reduce.rst:25