Add "Builds" to commit Builds tab page title.

app/views/projects/commit/ci.html.haml

-- page_title "#{@commit.title} (#{@commit.short_id})", "Commits"
+- page_title "Builds", "#{@commit.title} (#{@commit.short_id})", "Commits"
 = render "projects/commits/header_title"
 = render "commit_box"
 = render "ci_menu"