DEV: Rename `hilight` to `highlight` (#13526)

DEV: Rename hilight to highlight (#13526)

diff --git a/app/mailers/user_notifications.rb b/app/mailers/user_notifications.rb
index e7c8829..31336ce 100644
--- a/app/mailers/user_notifications.rb
+++ b/app/mailers/user_notifications.rb
@@ -662,7 +662,7 @@ class UserNotifications < ActionMailer::Base
         message = email_post_markdown(post) + (reached_limit ? "\n\n#{I18n.t "user_notifications.reached_limit", count: SiteSetting.max_emails_per_day_per_user}" : "")
       end
 
-      first_footer_classes = "hilight"
+      first_footer_classes = "highlight"
       if (allow_reply_by_email && user.staged) || (user.suspended? || user.staged?)
         first_footer_classes = ""
       end
diff --git a/lib/email/styles.rb b/lib/email/styles.rb
index 73c6e08..7546740 100644
--- a/lib/email/styles.rb
+++ b/lib/email/styles.rb
@@ -185,7 +185,7 @@ module Email
     def format_html
       correct_first_body_margin
       correct_footer_style
-      correct_footer_style_hilight_first
+      correct_footer_style_highlight_first
       reset_tables
 
       html_lang = SiteSetting.default_locale.sub("_", "-")
@@ -376,9 +376,9 @@ module Email
       end
     end
 
-    def correct_footer_style_hilight_first
+    def correct_footer_style_highlight_first
       footernum = 0
-      @fragment.css('.footer.hilight').each do |element|
+      @fragment.css('.footer.highlight').each do |element|
         linknum = 0
         element.css('a').each do |inner|
           # we want the first footer link to be specially highlighted as IMPORTANT

GitHub sha: 61472d6aaa61fae09d1b38cdbe7eacc32bbb85b0

This commit appears in #13526 which was approved by pmusaraj. It was merged by CvX.