[fix] eslint - option configFile changed to overrideConfigFile

https://github.com/sindresorhus/grunt-eslint/pull/171

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

searx/static/themes/simple/gruntfile.js

@@ -14,7 +14,7 @@ module.exports = function(grunt) {
     },
     eslint: {
       options: {
-        configFile: '.eslintrc.json',
+        overrideConfigFile: '.eslintrc.json',
         failOnError: false
       },
       target: [