Apply suggestions from code review

Had to make a new batch as some suggestions were not included

Co-authored-by: Sam Harwell <sam@tunnelvisionlabs.com>

Author: angelobreuer

StyleCop.Analyzers/StyleCop.Analyzers.Test/DocumentationRules/SA1648UnitTests.cs

@@ -311,6 +311,7 @@ public void TestMethod() { }
         /// <returns>A <see cref="Task"/> representing the asynchronous unit test.</returns>
         [Fact]
         [WorkItem(3291, "https://github.com/DotNetAnalyzers/StyleCopAnalyzers/issues/3291")]
+        [WorkItem(3291, "https://github.com/DotNetAnalyzers/StyleCopAnalyzers/issues/3291")]
         public async Task TestIncorrectDocumentedDelegateInheritDocAsync()
         {
             var testCode = @"
@@ -337,6 +338,7 @@ public class TestClass
         /// <returns>A <see cref="Task"/> representing the asynchronous unit test.</returns>
         [Fact]
         [WorkItem(3291, "https://github.com/DotNetAnalyzers/StyleCopAnalyzers/issues/3291")]
+        [WorkItem(3291, "https://github.com/DotNetAnalyzers/StyleCopAnalyzers/issues/3291")]
         public async Task TestIncorrectDelegateInheritDocAsync()
         {
             var testCode = @"