[fix] naming of id for prefs in css

searx/static/themes/simple/src/less/preferences.less

@@ -1,5 +1,5 @@
-#tab-contentquery table td,
-#tab-contentquery table th {
+#tab-content-query table td,
+#tab-content-query table th {
   .ltr-text-align-right() !important;
   height: 3rem;
 }