Update library/contextvars.po

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

Author: husohome

library/contextvars.po

@@ -69,8 +69,7 @@ msgid ""
 "`ContextVar.get` when no value for the variable is found in the current "
 "context."
 msgstr ""
-"當在目前的情境中找不到變數的值時，:meth:`ContextVar.get` 會回傳 *default* 參"
-"數的值，此 *default* 參數只能用關鍵字來定義（關鍵字引數）。"
+"當在目前的情境中找不到變數的值時，:meth:`ContextVar.get` 會回傳僅限關鍵字參數 *default*。"
 
 #: ../../library/contextvars.rst:42
 msgid ""