fix test crash after rename link

spec/support/shared_examples.rb

@@ -2,7 +2,7 @@ shared_examples_for :project_side_pane do
   subject { page }
   it { should have_content((@project || project).name) }
   it { should have_content("Commits") }
-  it { should have_content("Code") }
+  it { should have_content("Files") }
 end
 
 shared_examples_for :tree_view do