Update environments empty state

What does this MR do?

Update environments empty state, according to UX guidelines for paragraph alignment and more in #40468 (closed).

Before	After

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated
• Tests added for this feature/bug
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the database guides

spec/features/projects/environments/environments_spec.rb

@@ -95,7 +95,7 @@ def stop_button_selector
     end
 
     it 'does not show environments and counters are set to zero' do
-      expect(page).to have_content('You don\'t have any environments right now.')
+      expect(page).to have_content('You don\'t have any environments right now')
 
       expect(page.find('.js-environments-tab-available .badge').text).to eq('0')
       expect(page.find('.js-environments-tab-stopped .badge').text).to eq('0')