Fix comment grammar to align with other specs

Author: arkirchner

spec/policies/comment_policy_spec.rb

@@ -58,15 +58,15 @@
         end
       end
 
-      it 'dose not grants access to the author' do
+      it 'does not grants access to the author' do
         expect(described_class).not_to permit(comment.user, comment)
       end
     end
 
     context 'when content moderation is disabled' do
       let(:reports_enabled) { false }
 
-      it 'grants no access to all user types' do
+      it 'does not grant access to all user types' do
         user_types.each do |user_type|
           expect(described_class).not_to permit(build_stubbed(user_type), comment)
         end