[skip CI] Translate deepin-log-viewer.ts in it

76% of minimum 50% translated source file: 'deepin-log-viewer.ts'
on 'it'.

Sync of partially translated files: 
untranslated content is included with an empty translation 
or source language content depending on file format

translations/deepin-log-viewer_it.ts

@@ -500,6 +500,10 @@ Localizzazione italiana a cura di Massimo A. Carofano.</translation>
  audit only administrators can view the audit log</source>
         <translation type="unfinished"/>
     </message>
+    <message>
+        <source>Audit log is not exist.</source>
+        <translation type="unfinished"/>
+    </message>
 </context>
 <context>
     <name>main</name>