Update spec/lib/discourse_chat_integration/chat_integration_reference…

…_post_spec.rb

Co-authored-by: Jarek Radosz <jradosz@gmail.com>

spec/lib/discourse_chat_integration/chat_integration_reference_post_spec.rb

@@ -32,7 +32,7 @@
       expect(post.raw).to eq("Added #tag1, #tag2 and removed #tag3, #tag4")
     end
 
-    it "should have a working excerpt" do
+    it "has a working excerpt" do
       post =
         described_class.new(
           user: context["user"],