修复单元测试错误

src/Hotline.Application.Tests/Application/KnowApplicationTest.cs

@@ -39,7 +39,7 @@ public class KnowApplicationTest
     [Fact]
     public async Task TitleParticiple_Test()
     {
-        var result = await _knowApplication.TitleParticiple(null, "短信回访的相关解释口径、规范用语");
+        var result = await _knowApplication.TitleParticiple("短信回访的相关解释口径、规范用语");
         result.ShouldNotBeNull();
     }