🌐 Update translation files

po/fr.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Burn-My-Windows\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2022-01-28 14:59+0100\n"
+"POT-Creation-Date: 2022-01-28 20:08+0100\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: Automatically generated\n"
 "Language-Team: none\n"
@@ -16,7 +16,13 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 
-#: prefs.js:355
+#. Translators: %s will be replaced by the effect's name.
+#: prefs.js:336
+#, javascript-format
+msgid "Preview for %s"
+msgstr ""
+
+#: prefs.js:356
 msgid "Close this Window to Preview the Effect!"
 msgstr ""