Update library/contextvars.po

Co-authored-by: Dr.XYZ <[email protected]>

Author: husohome

library/contextvars.po

@@ -200,7 +200,7 @@ msgid ""
 "The following snippet gets a copy of the current context and prints all "
 "variables and their values that are set in it::"
 msgstr ""
-"以下程式碼片段會取得目前情境的複本，並顯示在其中設定的所有變數及其值：："
+"以下程式碼片段會取得目前情境的複本，並顯示在其中設定的所有變數及其值：::"
 
 #: ../../library/contextvars.rst:131
 msgid ""