Improve the wording explaining protected branches.

app/views/projects/protected_branches/index.html.haml

 %h3.page-title Protected branches
-%p.light This ability allows to keep stable branches secured and force code review before merge to protected branches
+%p.light This ability keeps stable branches secure and forces developers to use code reviews
 %hr
 
 .bs-callout.bs-callout-info
-  %p Protected branches designed to
+  %p Protected branches are designed to
   %ul
-    %li prevent push for all except #{link_to "masters", help_page_path("permissions", "permissions"), class: "vlink"}
-    %li prevent branch from force push
-    %li prevent branch from removal
-  %p Read more about project permissions #{link_to "here", help_page_path("permissions", "permissions"), class: "underlined-link"}
+    %li prevent pushes from everybody except #{link_to "masters", help_page_path("permissions", "permissions"), class: "vlink"}
+    %li prevents anyone from force pushing to the branch
+    %li prevents anyone from deleting the branch
+  %p Read more about #{link_to "project permissions", help_page_path("permissions", "permissions"), class: "underlined-link"}
 
 - if can? current_user, :admin_project, @project
   = form_for [@project, @protected_branch], html: { class: 'form-horizontal' } do |f|