Merge branch 'docs-aqualls-future-tense' into 'master'

Docs: initial test for future tense

See merge request gitlab-org/gitlab!25950

doc/.linting/vale/styles/gitlab/FutureTense.yml

+---
+# Warning: gitlab.FutureTense
+#
+# Checks for use of future tense in sentences. Present tense is preferred as
+# much as possible.
+#
+# For a list of all options, see https://errata-ai.gitbook.io/vale/getting-started/styles
+extends: existence
+message: 'Avoid using future tense: "%s"'
+ignorecase: true
+level: suggestion
+link: https://docs.gitlab.com/ee/development/documentation/styleguide.html#language-to-avoid
+tokens:
+  - going to be
+  - going to
+  - he'll
+  - she'll
+  - they'll
+  - we'll
+  - will be
+  - will have
+  - will # Leave this word after the two-word 'will' variants as a catchall
+  - won't
+  - you'll