Tabs replaced by spaces !

The presence of tabs can be checked with 'rubocop --only Tab --format
files'

lib/common/models/vulnerability/output.rb

@@ -8,12 +8,12 @@ class Vulnerability
       puts ' |'
       puts ' | ' + red("* Title: #{title}")
       references.each do |key, urls|
-				methodname = "url_#{key}"
-				urls.each do |u|
-					url = send(methodname, u)
-					puts ' | ' + red("* Reference: #{url}") if url
-				end
-			end
+        methodname = "url_#{key}"
+        urls.each do |u|
+          url = send(methodname, u)
+          puts ' | ' + red("* Reference: #{url}") if url
+        end
+      end
       if !fixed_in.empty?
          puts " | * Fixed in: #{fixed_in}"
       end