[BLOG] Add pytest-pytorch

[MarsBarLee]

Link to blog post, successful build.

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[MarsBarLee]

I'm getting the Vercel build error: error [Error: [next-mdx-remote] error compiling MDX:

Full error message:

Unexpected character `.` (U+002E) in attribute name, 
expected an attribute name character such as letters, 
digits, `$`, or `_`; `=` to initialize a value; whitespace before attributes; or the end of the tag

  74 |
  75 |     ERROR: not found: /home/user/tmp35zsok9u.py::TestFoo::test_bar
> 76 |     (no name '/home/user/tmp35zsok9u.py::TestFoo::test_bar' in any of [<Module tmp35zsok9u.py>])
     |                                                                                           ^
  77 |
  78 | If the absence of this very basic [`pytest`](https://pytest.org) feature

Link to error

The context is showing the result of some code. Link to this section in the old blog website.

Similar problem to #647: output of code blocks formatted as plain text, not in code blocks, causing problems to Vercel