Apply reviewer notes: update CHANGELOG, adjust code formatting

CHANGELOG

@@ -2,7 +2,7 @@ Please view this file on the master branch, on stable branches it's out of date.
 
 v 8.9.0 (unreleased)
   - Fix Error 500 when using closes_issues API with an external issue tracker
-  - Add more information into RSS feed for issues.
+  - Add more information into RSS feed for issues (Alexander Matyushentsev)
   - Bulk assign/unassign labels to issues.
   - Ability to prioritize labels !4009 / !3205 (Thijs Wouters)
   - Fix endless redirections when accessing user OAuth applications when they are disabled
@@ -124,7 +124,6 @@ v 8.8.1
 
 v 8.8.0
   - Implement GFM references for milestones (Alejandro Rodríguez)
-v 8.8.0 (unreleased)
   - Snippets tab under user profile. !4001 (Long Nguyen)
   - Fix error when using link to uploads in global snippets
   - Fix Error 500 when attempting to retrieve project license when HEAD points to non-existent ref

spec/features/atom/dashboard_issues_spec.rb

@@ -12,7 +12,7 @@ describe "Dashboard Issues Feed", feature: true  do
     end
 
     describe "atom feed" do
-      it "should render atom feed via private token" do
+      it "renders atom feed via private token" do
         visit issues_dashboard_path(:atom, private_token: user.private_token)
 
         expect(response_headers['Content-Type']).to have_content('application/atom+xml')
@@ -22,7 +22,7 @@ describe "Dashboard Issues Feed", feature: true  do
       context "issue with basic fields" do
         let!(:issue2) { create(:issue, author: user, assignee: user, project: project2, description: 'test desc') }
 
-        it "should render issue fields" do
+        it "renders issue fields" do
           visit issues_dashboard_path(:atom, private_token: user.private_token)
 
           entry = find(:xpath, "//feed/entry[contains(summary/text(),'#{issue2.title}')]")
@@ -45,7 +45,7 @@ describe "Dashboard Issues Feed", feature: true  do
           issue1.labels << label1
         end
 
-        it "should render issue label and milestone info" do
+        it "renders issue label and milestone info" do
           visit issues_dashboard_path(:atom, private_token: user.private_token)
 
           entry = find(:xpath, "//feed/entry[contains(summary/text(),'#{issue1.title}')]")