Fix a windows EOL bug for test case

[iron9light]

This test case will be failed when run on windows.

[Arkatufus]

I don't get it, what are you trying to do here, exactly?

[iron9light]

My working OS is windows, and my git setting is keeping EOL as git remote source.

In your code, the EOL of the json like string is \n, and I guess config.PrettyPrint will use Environment.NewLine as EOL for output print string, which means \r\n in my environment.
Then the string assert will be failed.

Since EOL depends on OS and git global settings, it's not easy to contral it. We should ignore EOL in the code logic.

[Arkatufus]

Thanks for the PR 👍