Translate rst:21 (#678)

RitaLi117 · Tsai Ying Li · mattwang44 · web-flow · commit 576b7ae1d6f7 · 2023-10-22T14:02:27.000+08:00
Co-authored-by: Tsai Ying Li &lt;tsaiyingli@TsaideMacBook-Pro.local&gt;
Co-authored-by: Wei-Hsiang (Matt) Wang &lt;mattwang44@gmail.com&gt;
diff --git a/library/string.po b/library/string.po
@@ -41,7 +41,7 @@ msgstr ""
 
 #: ../../library/string.rst:21
 msgid "The constants defined in this module are:"
-msgstr ""
+msgstr "此模組中定義的常數為："
 
 #: ../../library/string.rst:26
 msgid ""
