Translated using Weblate (#5623)

Co-authored-by: Kevin Papst <kevin@kevinpapst.de>
Co-authored-by: Martin Maslyankov <m.maslyankov@me.com>
Co-authored-by: Wei-Cheng Yeh (IID) <iid@ccns.ncku.edu.tw>
Co-authored-by: தமிழ்நேரம் <anishprabu.t@gmail.com>

translations/system-configuration.zh_CN.xlf

@@ -58,9 +58,9 @@
         <source>calendar.visibleHours.end</source>
         <target>可见时间范围的结束时间</target>
       </trans-unit>
-      <trans-unit id="BYy.c1V" resname="calendar.slot_duration">
+      <trans-unit id="BYy.c1V" resname="calendar.slot_duration" xml:space="preserve">
         <source>calendar.slot_duration</source>
-        <target>周和日查看的空隙持续时间（格式：时:分:秒）</target>
+        <target state="translated">周和日查看的空隙持续时间</target>
       </trans-unit>
       <trans-unit id="nwuLBP4" resname="branding">
         <source>branding</source>