Update Vale rules with correct links

Link Vale rules to the new location for these words.

doc/.vale/gitlab/CurrentStatus.yml

@@ -8,6 +8,6 @@ extends: existence
 message: 'Avoid words like "%s" that promise future changes, because documentation is about the current state of the product.'
 level: suggestion
 ignorecase: true
-link: https://docs.gitlab.com/ee/development/documentation/styleguide.html#language-to-avoid
+link: https://docs.gitlab.com/ee/development/documentation/styleguide.html#usage-list
 tokens:
   - currently

doc/.vale/gitlab/FutureTense.yml

@@ -9,7 +9,7 @@ extends: existence
 message: 'Avoid using future tense: "%s". Use present tense instead.'
 ignorecase: true
 level: warning
-link: https://docs.gitlab.com/ee/development/documentation/styleguide.html#language-to-avoid
+link: https://docs.gitlab.com/ee/development/documentation/styleguide.html#usage-list
 raw:
   - "(going to( |\n|[[:punct:]])[a-zA-Z]*|"
   - "will( |\n|[[:punct:]])[a-zA-Z]*|"

doc/.vale/gitlab/Simplicity.yml

@@ -8,7 +8,7 @@ extends: existence
 message: 'Avoid words like "%s" that imply ease of use, because the user may find this action hard.'
 level: suggestion
 ignorecase: true
-link: https://docs.gitlab.com/ee/development/documentation/styleguide.html#language-to-avoid
+link: https://docs.gitlab.com/ee/development/documentation/styleguide.html#usage-list
 tokens:
   - easy
   - easily