diff --git a/README.md b/README.md
index 8ab2d59ff0..df4d41cbd3 100644
--- a/README.md
+++ b/README.md
@@ -16,18 +16,6 @@ community that make adding new functionality easy.
 [Jinja]: https://jinja.palletsprojects.com/
 
 
-## Installing
-
-Install and update from [PyPI][] using an installer such as [pip][]:
-
-```
-$ pip install -U Flask
-```
-
-[PyPI]: https://pypi.org/project/Flask/
-[pip]: https://pip.pypa.io/en/stable/getting-started/
-
-
 ## A Simple Example
 
 ```python
@@ -47,14 +35,6 @@ $ flask run
 ```
 
 
-## Contributing
-
-For guidance on setting up a development environment and how to make a
-contribution to Flask, see the [contributing guidelines][].
-
-[contributing guidelines]: https://github.com/pallets/flask/blob/main/CONTRIBUTING.rst
-
-
 ## Donate
 
 The Pallets organization develops and supports Flask and the libraries
diff --git a/tox.ini b/tox.ini
index 5a232cd9eb..1fedc9227c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -32,7 +32,7 @@ commands = mypy
 
 [testenv:docs]
 deps = -r requirements/docs.txt
-commands = sphinx-build -W -b dirhtml docs docs/_build/dirhtml
+commands = sphinx-build -E -W -b dirhtml docs docs/_build/dirhtml
 
 [testenv:update-requirements]
 deps =