wikigen: add some context when diffing

generators/wiki/lib/wiki_generator.rb

@@ -68,7 +68,7 @@ class WikiGenerator
   def diff_page()
     wiki_content = remove_page_creation_date(@mw_client.get_page_content(@page_name)).strip # .strip removes potential '\n' at end of file
     generated_content = remove_page_creation_date(@generated_content).strip
-    diff = Diffy::Diff.new(wiki_content, generated_content, :context => 0)
+    diff = Diffy::Diff.new(wiki_content, generated_content, :context => 3)
     if (diff.to_s.empty?)
       puts "No differences found between generated and current wiki content for page #{@page_name}."
       return true