docs: fix gettext link

doc/source/locales/en/LC_MESSAGES/development/contribute-to-prog-i18n.po

@@ -9,7 +9,7 @@ msgstr ""
 "Project-Id-Version: JAnim\n"
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2024-06-08 23:30+0800\n"
-"PO-Revision-Date: 2024-06-08 23:30+0800\n"
+"PO-Revision-Date: 2024-06-09 00:20+0800\n"
 "Last-Translator: \n"
 "Language-Team: en <[email protected]>\n"
 "Language: en\n"
@@ -26,8 +26,8 @@ msgstr "Contribute to Internationalization of the Program"
 
 #: ../../source/development/contribute-to-prog-i18n.rst:6
 msgid ""
-"对于程序国际化而言，英文（en）和中文（zh_CN）是良好维护的， 如果你有需要给程序提"
-"供到其它语言的翻译，可以考虑进一步阅读这一部分"
+"对于程序国际化而言，英文（en）和中文（zh_CN）是良好维护的， 如果你有需要给程序"
+"提供到其它语言的翻译，可以考虑进一步阅读这一部分"
 msgstr ""
 "For program internationalization, English (en) and Chinese (zh_CN) are well "
 "maintained. \n"
@@ -45,7 +45,7 @@ msgstr "Generating Translation Files"
 #: ../../source/development/contribute-to-prog-i18n.rst:14
 msgid "请确保安装了 `GNU gettext <https://www.gnu.org/software/gettext/>`_"
 msgstr ""
-"Please ensure you have GNU gettext <https://www.gnu.org/software/gettext/>_ "
+"Please ensure you have `GNU gettext <https://www.gnu.org/software/gettext/>`_ "
 "installed."
 
 #: ../../source/development/contribute-to-prog-i18n.rst:18
@@ -113,7 +113,8 @@ msgid "假设你要进行翻译到日语的工作"
 msgstr "Assume you want to translate to Japanese."
 
 #: ../../source/development/contribute-to-prog-i18n.rst:51
-msgid "现在 ``janim/locale/ja/LC_MESSAGES/`` 中已经存放了翻译文件（后缀 ``.po``）"
+msgid ""
+"现在 ``janim/locale/ja/LC_MESSAGES/`` 中已经存放了翻译文件（后缀 ``.po``）"
 msgstr ""
 "Now, the translation files (with the .po suffix) are already stored in ``janim/"
 "locale/ja/LC_MESSAGES/``."