Fixes a fuzzy on library/os (#499)

Author: cschan1828

library/os.po

@@ -1253,9 +1253,8 @@ msgid "On Windows, this function is limited to pipes."
 msgstr ""
 
 #: ../../library/os.rst:1119 ../../library/os.rst:1597
-#, fuzzy
 msgid "Added support for pipes on Windows."
-msgstr "新增對 Windows 上 pipe 的支援。"
+msgstr "新增對 Windows 上的 pipe 支援。"
 
 #: ../../library/os.rst:1124
 msgid ""