change copy to "Environment variables"

app/views/ci/variables/_content.html.haml

-= _('Variables are applied to environments via the runner. They can be protected by only exposing them to protected branches or tags. You can use variables for passwords, secret keys, or whatever you want.')
+= _('Environment variables are applied to environments via the runner. They can be protected by only exposing them to protected branches or tags. You can use environment variables for passwords, secret keys, or whatever you want.')

app/views/projects/settings/ci_cd/show.html.haml

@@ -44,7 +44,7 @@
 %section.qa-variables-settings.settings.no-animate{ class: ('expanded' if expanded) }
   .settings-header
     %h4
-      = _('Variables')
+      = _('Environment variables')
       = link_to icon('question-circle'), help_page_path('ci/variables/README', anchor: 'variables'), target: '_blank', rel: 'noopener noreferrer'
     %button.btn.js-settings-toggle{ type: 'button' }
       = expanded ? _('Collapse') : _('Expand')

locale/gitlab.pot

@@ -2669,6 +2669,12 @@ msgstr ""
 msgid "Enter the merge request title"
 msgstr ""
 
+msgid "Environment variables"
+msgstr ""
+
+msgid "Environment variables are applied to environments via the runner. They can be protected by only exposing them to protected branches or tags. You can use environment variables for passwords, secret keys, or whatever you want."
+msgstr ""
+
 msgid "Environments"
 msgstr ""
 
@@ -7083,9 +7089,6 @@ msgstr ""
 msgid "Variables"
 msgstr ""
 
-msgid "Variables are applied to environments via the runner. They can be protected by only exposing them to protected branches or tags. You can use variables for passwords, secret keys, or whatever you want."
-msgstr ""
-
 msgid "Various container registry settings."
 msgstr ""