Test link generation with swapped startLine and endLine

Author: gazab

src/UnitTests/GitHub.Exports/SimpleRepositoryModelTests.cs

@@ -29,6 +29,7 @@ void SetupRepository(string sha)
     [InlineData(false, "https://github.com/foo/bar", "123123", @"src\dir\file1.cs", -1, -1, "https://github.com/foo/bar/blob/123123/src/dir/file1.cs")]
     [InlineData(false, "https://github.com/foo/bar", "123123", @"src\dir\file1.cs", 1, -1, "https://github.com/foo/bar/blob/123123/src/dir/file1.cs#L1")]
     [InlineData(false, "https://github.com/foo/bar", "123123", @"src\dir\file1.cs", 1, 2, "https://github.com/foo/bar/blob/123123/src/dir/file1.cs#L1-L2")]
+    [InlineData(false, "https://github.com/foo/bar", "123123", @"src\dir\file1.cs", 2, 1, "https://github.com/foo/bar/blob/123123/src/dir/file1.cs#L1-L2")]
     [InlineData(false, "https://github.com/foo/bar", "123123", @"src\dir\file1.cs", -1, 2, "https://github.com/foo/bar/blob/123123/src/dir/file1.cs")]
     [InlineData(false, "https://github.com/foo/bar", "123123", "", 1, 2, "https://github.com/foo/bar/commit/123123")]
     [InlineData(false, "https://github.com/foo/bar", "", @"src\dir\file1.cs", -1, 2, "https://github.com/foo/bar")]
@@ -37,6 +38,7 @@ void SetupRepository(string sha)
     [InlineData(true,  "https://github.com/foo/bar", "123123", @"src\dir\file1.cs", -1, -1, "https://github.com/foo/bar/blob/123123/src/dir/file1.cs")]
     [InlineData(true, "https://github.com/foo/bar", "123123", @"src\dir\file1.cs", 1, -1, "https://github.com/foo/bar/blob/123123/src/dir/file1.cs#L1")]
     [InlineData(true, "https://github.com/foo/bar", "123123", @"src\dir\file1.cs", 1, 2, "https://github.com/foo/bar/blob/123123/src/dir/file1.cs#L1-L2")]
+    [InlineData(true, "https://github.com/foo/bar", "123123", @"src\dir\file1.cs", 2, 1, "https://github.com/foo/bar/blob/123123/src/dir/file1.cs#L1-L2")]
     [InlineData(true, "https://github.com/foo/bar", "123123", @"src\dir\file1.cs", -1, 2, "https://github.com/foo/bar/blob/123123/src/dir/file1.cs")]
     [InlineData(true, "https://github.com/foo/bar", "", @"src\dir\file1.cs", -1, 2, "https://github.com/foo/bar")]
     [InlineData(true, null, "123123", @"src\dir\file1.cs", 1, 2, null)]