DuckDuckGo Goodie: Fixed link to blog (#3897)

share/goodie/duck_duck_go/responses.yml

@@ -41,7 +41,7 @@ bangs:
 blog:
   title: "Want to stay up to date with DuckDuckGo?"
   subtitle: "Visit the official DuckDuckGo blog"
-  url: https://duck.co/blog
+  url: https://spreadprivacy.com/
 chrome:
   title: "Need help with the Chrome browser?"
   subtitle: "Visit the DuckDuckgo help page for Chrome"

t/DuckDuckGo.t

@@ -29,13 +29,13 @@ my @about_result = (
         }
     });
 my @blog_result = (
-    'Want to stay up to date with DuckDuckGo? https://duck.co/blog',
+    'Want to stay up to date with DuckDuckGo? https://spreadprivacy.com/',
     structured_answer => {
         data => {
             title => 'Want to stay up to date with DuckDuckGo?',
             subtitle_image => undef,
             subtitle_text => 'Visit the official DuckDuckGo blog',
-            subtitle_url => 'https://duck.co/blog'
+            subtitle_url => 'https://spreadprivacy.com/'
         },
         templates => {
             group => 'text',