Try some more vale fixes (#12260)

- Fix style filename
- Matches on "pull request"
- Fix suggestions on SSO
- Apply some fixes introduced last PR

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:books: Documentation previews :books:

- User's documentation (`docs`):
https://docs--12260.org.readthedocs.build/12260/

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- Developer's documentation (`dev`):
https://dev--12260.org.readthedocs.build/12260/

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---------

Co-authored-by: Eric Holscher <[email protected]>

Author: agjohnson

docs/user/environment-variables.rst

@@ -52,7 +52,7 @@ There are two noteworthy exceptions for *custom environment variables*:
 
 Build checkout step
   Custom environment variables are **not** available during the checkout step of the :doc:`build process </builds>`
-Pull Request builds
+Pull request builds
   Custom environment variables that are not marked as :guilabel:`Public` will not be available in :doc:`pull request builds </pull-requests>`
 
 .. the presence of this section is intended to evolve into a better explanation

docs/user/explanation/configuration-file.rst

@@ -19,7 +19,7 @@ Versioning the configuration
 
 Configuration as code
   Configuration uses the same workflow as your source code,
-  including being reviewed and tested in a Pull Request.
+  including being reviewed and tested in a pull request.
 
 Options that are not found in the configuration file
   Not everything is suitable for version-specific configuration,

docs/user/guides/set-up-single-sign-on-saml.rst

@@ -23,6 +23,8 @@ Create a SAML application in Okta
 
 In order to enable SSO with Okta, you need to create a new SAML application in your Okta account.
 
+.. vale RTD.features = NO
+
 1. Log in to your Okta account.
 2. Click on :guilabel:`Applications`.
 3. Click on :guilabel:`Create App Integration`.
@@ -51,6 +53,8 @@ In order to enable SSO with Okta, you need to create a new SAML application in y
 8. Select ``This is an internal app that we have created``.
 9. Click :guilabel:`Finish`.
 
+.. vale RTD.features = YES
+
 Enable SAML on your Read the Docs organization
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~