linting: additional path combine replacement

Signed-off-by: Vincent Biret <vibiret@microsoft.com>

Author: baywet

test/Microsoft.OpenApi.Readers.Tests/ReferenceService/TryLoadReferenceV2Tests.cs

@@ -16,7 +16,7 @@ public class TryLoadReferenceV2Tests
         public async Task LoadParameterReference()
         {
             // Arrange
-            var result = await OpenApiDocument.LoadAsync(Path.Combine(SampleFolderPath, "multipleReferences.v2.yaml"), SettingsFixture.ReaderSettings, token: TestContext.Current.CancellationToken);
+            var result = await OpenApiDocument.LoadAsync(Path.Join(SampleFolderPath, "multipleReferences.v2.yaml"), SettingsFixture.ReaderSettings, token: TestContext.Current.CancellationToken);
             var reference = new OpenApiParameterReference("skipParam", result.Document);
 
             // Assert
@@ -41,7 +41,7 @@ public async Task LoadParameterReference()
         [Fact]
         public async Task LoadSecuritySchemeReference()
         {
-            var result = await OpenApiDocument.LoadAsync(Path.Combine(SampleFolderPath, "multipleReferences.v2.yaml"), SettingsFixture.ReaderSettings, token: TestContext.Current.CancellationToken);
+            var result = await OpenApiDocument.LoadAsync(Path.Join(SampleFolderPath, "multipleReferences.v2.yaml"), SettingsFixture.ReaderSettings, token: TestContext.Current.CancellationToken);
 
             var reference = new OpenApiSecuritySchemeReference("api_key_sample", result.Document);
 
@@ -59,7 +59,7 @@ public async Task LoadSecuritySchemeReference()
         [Fact]
         public async Task LoadResponseReference()
         {
-            var result = await OpenApiDocument.LoadAsync(Path.Combine(SampleFolderPath, "multipleReferences.v2.yaml"), SettingsFixture.ReaderSettings, token: TestContext.Current.CancellationToken);
+            var result = await OpenApiDocument.LoadAsync(Path.Join(SampleFolderPath, "multipleReferences.v2.yaml"), SettingsFixture.ReaderSettings, token: TestContext.Current.CancellationToken);
 
             var reference = new OpenApiResponseReference("NotFound", result.Document);
 
@@ -80,7 +80,7 @@ public async Task LoadResponseReference()
         [Fact]
         public async Task LoadResponseAndSchemaReference()
         {
-            var result = await OpenApiDocument.LoadAsync(Path.Combine(SampleFolderPath, "multipleReferences.v2.yaml"), SettingsFixture.ReaderSettings, token: TestContext.Current.CancellationToken);
+            var result = await OpenApiDocument.LoadAsync(Path.Join(SampleFolderPath, "multipleReferences.v2.yaml"), SettingsFixture.ReaderSettings, token: TestContext.Current.CancellationToken);
             var reference = new OpenApiResponseReference("GeneralError", result.Document);
 
             var expected = new OpenApiResponse