Remove -W command (#3864)

* Remove -W command

* Change RTD file

* RL

Author: jeremyliweishih

.readthedocs.yaml

@@ -7,7 +7,7 @@ version: 2
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
   configuration: docs/source/conf.py
-  fail_on_warning: true
+  fail_on_warning: false
 
 # Build documentation with MkDocs
 #mkdocs:

docs/source/release_notes.rst

@@ -22,6 +22,7 @@ Release Notes
         * Reverted change adding a ``should_skip_featurization`` flag to time series pipelines :pr:`3862`
     * Documentation Changes
         * Added information about STL Decomposition to the time series docs :pr:`3835`
+        * Removed RTD failure on warnings :pr:`3864`
     * Testing Changes
 
 .. warning::