Update library/os.po

Co-authored-by: W. H. Wang <[email protected]>

Author: Super1115

library/os.po

@@ -246,7 +246,7 @@ msgstr ""
 #: ../../library/os.rst:136
 msgid ":func:`os.fsdecode` and :func:`os.fsencode` use the UTF-8 encoding."
 msgstr ""
-":func:`os.fsdecode` 和 :func:`os.fsencode` 使用 UTF-8 編碼"
+":func:`os.fsdecode` 和 :func:`os.fsencode` 使用 UTF-8 編碼。"
 
 #: ../../library/os.rst:137
 msgid ""