Drop beta from title
The title will eventually change to not be beta, and any links to this
anchor will not scroll to this section, which is always confusing.
@@ -299,8 +299,8 @@ The path to the Conda environment file, relative to the root of the project.
:Type: ``path``
:Required: ``true``
-build (beta specification)
-~~~~~~~~~~~~~~~~~~~~~~~~~~
+build
+~~~~~
.. warning::
