Point to correct docker version for stable
@@ -177,7 +177,7 @@ The build Docker image to be used.
Each image support different Python versions and has different packages installed,
as defined here:
-* `stable <https://github.com/rtfd/readthedocs-docker-images/tree/3.0.0>`_: 2, 2.7, 3, 3.3, 3.4, 3.5, 3.6
+* `stable <https://github.com/rtfd/readthedocs-docker-images/tree/releases/2.x>`_: 2, 2.7, 3, 3.3, 3.4, 3.5, 3.6
* `latest <https://github.com/rtfd/readthedocs-docker-images/tree/releases/3.x>`_: 2, 2.7, 3, 3.3, 3.4, 3.5, 3.6
sphinx
