[fix] translation

searx/translations/de/LC_MESSAGES/messages.po

 msgstr ""
 
 #: searx/templates/preferences.html:42 searx/templates/preferences.html:54
-#, fuzzy
 msgid "Block"
-msgstr "Zurück"
+msgstr ""
 
 #: searx/templates/preferences.html:62
 msgid ""

searx/translations/fr/LC_MESSAGES/messages.po

 msgstr "Catégorie par défaut"
 
 #: searx/templates/preferences.html:15
-#, fuzzy
 msgid "Search language"
 msgstr "Langue de l'interface"
 
 msgstr ""
 
 #: searx/templates/preferences.html:42 searx/templates/preferences.html:54
-#, fuzzy
 msgid "Block"
-msgstr "retour"
+msgstr ""
 
 #: searx/templates/preferences.html:62
 msgid ""

searx/translations/hu/LC_MESSAGES/messages.po

 msgstr "Engedélyezés"
 
 #: searx/templates/preferences.html:42 searx/templates/preferences.html:54
-#, fuzzy
 msgid "Block"
 msgstr "Tiltás"