Add additional explanation to Deobfuscate final filenames

interfaces/Config/templates/config_switches.tmpl

@@ -245,7 +245,7 @@
                     <div class="field-pair">
                         <label class="config" for="deobfuscate_final_filenames">$T('opt-deobfuscate_final_filenames')</label>
                         <input type="checkbox" name="deobfuscate_final_filenames" id="deobfuscate_final_filenames" value="1" <!--#if int($deobfuscate_final_filenames) > 0 then 'checked="checked"' else ""#--> />
-                        <span class="desc">$T('explain-deobfuscate_final_filenames')</span>
+                        <span class="desc">$T('explain-deobfuscate_final_filenames') $T('explain-deobfuscate_final_filenames-ext')</span>
                     </div>
                     <div class="field-pair advanced-settings">
                         <label class="config" for="enable_meta">$T('opt-enable_meta')</label>

sabnzbd/skintext.py

@@ -562,6 +562,9 @@ SKIN_TEXT = {
     "explain-deobfuscate_final_filenames": TT(
         "If filenames of (large) files in the final folder look obfuscated or meaningless they will be renamed to the job name."
     ),
+    "explain-deobfuscate_final_filenames-ext": TT(
+        "Additionally, attempts to set the correct file extension based on the file signature if the extension is not present or meaningless."
+    ),
     "opt-enable_https_verification": TT("HTTPS certificate verification"),
     "explain-enable_https_verification": TT(
         "Verify certificates when connecting to indexers and RSS-sources using HTTPS."