Update millward_brown.eno (#331)

This company has a convoluted backstory, but essentially the original company name and website no longer exist. 

Ref: https://en.wikipedia.org/wiki/Kantar_Group#Kantar_Millward_Brown

db/organizations/millward_brown.eno

@@ -1,9 +1,10 @@
-name: Millward Brown
-website_url: https://www.millwardbrowndigital.com/
-privacy_policy_url: http://www.millwardbrown.com/footer/privacy-terms
-privacy_contact: [email protected]
-country: US
-description: Millward Brown provides qualitative, quantitative and consulting services with respect to brands, marketing communications, media and marketing effectiveness. They work across a range of industries and categories, including brand strategy and experience, creative development and campaign evaluation. Millward Brown is a WPP company.
+name: Kantar Group
+website_url: https://www.kantar.com
+privacy_policy_url: https://www.kantar.com/cookies-policies
+privacy_contact: [email protected]
+country: GB
+description: Kantar Group is a global data, insights, and consulting company based in London, England. Working in various research disciplines, including brand guidance, brand strategy, social media monitoring, advertising effectiveness, consumer and shopper behaviour, and public opinion.
+
 
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