Apply suggestions from code review

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: paulirwin

test/F23.StringSimilarity.Tests/CosineTest.cs

@@ -34,7 +34,7 @@ namespace F23.StringSimilarity.Tests
 {
     [SuppressMessage("ReSharper", "ArgumentsStyleLiteral")]
     [SuppressMessage("ReSharper", "ArgumentsStyleNamedExpression")]
-    public class CosineTest()
+    public class CosineTest
     {
         [Fact]
         public void TestSimilarity()

test/F23.StringSimilarity.Tests/JaccardTest.cs

@@ -69,8 +69,8 @@ public void TestDistance()
         [Fact]
         public void GetProfile_IsPublic()
         {
-            var cosine = new Jaccard(k: 2);
-            var profile = cosine.GetProfile("test string");
+            var jaccard = new Jaccard(k: 2);
+            var profile = jaccard.GetProfile("test string");
 
             Assert.NotNull(profile);
         }

test/F23.StringSimilarity.Tests/QGramTest.cs

@@ -73,8 +73,8 @@ public void TestDistance()
         [Fact]
         public void GetProfile_IsPublic()
         {
-            var cosine = new QGram(k: 2);
-            var profile = cosine.GetProfile("test string");
+            var qgram = new QGram(k: 2);
+            var profile = qgram.GetProfile("test string");
 
             Assert.NotNull(profile);
         }

test/F23.StringSimilarity.Tests/SorensenDiceTest.cs

@@ -68,8 +68,8 @@ public void TestDistance()
         [Fact]
         public void GetProfile_IsPublic()
         {
-            var cosine = new SorensenDice(k: 2);
-            var profile = cosine.GetProfile("test string");
+            var dice = new SorensenDice(k: 2);
+            var profile = dice.GetProfile("test string");
 
             Assert.NotNull(profile);
         }