message: docs: put docs style guide back in left nav
  PR Close
diff: "url": "guide/styleguide",
  "title": "Coding Style Guide",
  "tooltip": "Guidelines for writing Angular code."
  + },
  + {
  + "url": "guide/docs-style-guide",
  + "title": "Documentation Style Guide",
  + "tooltip": "Style guide for documentation authors."
  }
  ]
  }
  