Replace all instances of ray.readthedocs.io with ray.io (#7994)

doc/examples/cython/ray-project/project.yaml

@@ -4,7 +4,7 @@ name: ray-example-cython
 
 description: "Example of how to use Cython with ray"
 tags: ["ray-example", "cython"]
-documentation: https://ray.readthedocs.io/en/latest/advanced.html#cython-code-in-ray
+documentation: https://docs.ray.io/en/latest/advanced.html#cython-code-in-ray
 
 cluster:
   config: ray-project/cluster.yaml

doc/examples/lbfgs/ray-project/project.yaml

@@ -4,7 +4,7 @@ name: ray-example-lbfgs
 
 description: "Parallelizing the L-BFGS algorithm in ray"
 tags: ["ray-example", "optimization", "lbfgs"]
-documentation: https://ray.readthedocs.io/en/latest/auto_examples/plot_lbfgs.html
+documentation: https://docs.ray.io/en/latest/auto_examples/plot_lbfgs.html
 
 cluster:
   config: ray-project/cluster.yaml

doc/examples/newsreader/ray-project/project.yaml

@@ -4,7 +4,7 @@ name: ray-example-newsreader
 
 description: "A simple news reader example that uses ray actors to serve requests"
 tags: ["ray-example", "flask", "rss", "newsreader"]
-documentation: https://ray.readthedocs.io/en/latest/auto_examples/plot_newsreader.html
+documentation: https://docs.ray.io/en/latest/auto_examples/plot_newsreader.html
 
 cluster:
   config: ray-project/cluster.yaml

doc/examples/plot_example-a3c.rst

@@ -13,7 +13,7 @@ View the `code for this example`_.
 
 .. note::
 
-    For an overview of Ray's reinforcement learning library, see `RLlib <http://ray.readthedocs.io/en/latest/rllib.html>`__.
+    For an overview of Ray's reinforcement learning library, see `RLlib <http://docs.ray.io/en/latest/rllib.html>`__.
 
 To run the application, first install **ray** and then some dependencies:
 

doc/examples/plot_hyperparameter.py

@@ -16,7 +16,7 @@ their results to be ready.
     hyperparameter tuning, use `Tune`_, a scalable hyperparameter
     tuning library built using Ray's Actor API.
 
-.. _`Tune`: https://ray.readthedocs.io/en/latest/tune.html
+.. _`Tune`: https://docs.ray.io/en/latest/tune.html
 
 Setup: Dependencies
 -------------------

doc/examples/plot_streaming.rst

@@ -87,7 +87,7 @@ the top 10 words in these articles together with their word count:
 Note that this examples uses `distributed actor handles`_, which are still
 considered experimental.
 
-.. _`distributed actor handles`: http://ray.readthedocs.io/en/latest/actors.html
+.. _`distributed actor handles`: http://docs.ray.io/en/latest/actors.html
 
 There is a ``Mapper`` actor, which has a method ``get_range`` used to retrieve
 word counts for words in a certain range: