The hyperlinks in the [readme.md]((https://github.com/microsoft/c9-python-getting-started/blob/master/python-for-beginners/16%20-%20Calling%20APIs/readme.md) ) file is broken specially those having target to https://westus.dev.cognitive.microsoft.com base URL For example: [API documentation](https://westus.dev.cognitive.microsoft.com/docs/services/5adf991815e1060e6355ad44/operations/56f91f2e778daf14a499e1fa?WT.mc_id=python-c9-niner?WT.mc_id=python-c9-niner)