Fixed broken link renders in SPM example notebook

[santacodes]

Description

Removed the inline code to make the link reference render properly in the documentation.

Fixes #4181

Type of change

Please add a line in the relevant section of CHANGELOG.md to document the change (include PR #) - note reverse order of PR #s. If necessary, also add to the list of breaking changes.

• [ ] New feature (non-breaking change which adds functionality)
• [ ] Optimization (back-end change that speeds up the code)
• [ ] Bug fix (non-breaking change which fixes an issue)

Key checklist:

• [ ] No style issues: $ pre-commit run (or $ nox -s pre-commit) (see CONTRIBUTING.md for how to set this up to run automatically when committing locally, in just two lines of code)
• [ ] All tests pass: $ python run-tests.py --all (or $ nox -s tests)
• [ ] The documentation builds: $ python run-tests.py --doctest (or $ nox -s doctests)

You can run integration tests, unit tests, and doctests together at once, using $ python run-tests.py --quick (or $ nox -s quick).

Further checks:

• [ ] Code is commented, particularly in hard-to-understand areas
• [ ] Tests added that prove fix is effective or that feature works

[review-notebook-app[bot]]

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 99.58%. Comparing base (4d08b7a) to head (aaf12d4). Report is 3 commits behind head on develop.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #4185 +/- ## ======================================== Coverage 99.58% 99.58% ======================================== Files 288 288 Lines 21799 21799 ======================================== Hits 21708 21708 Misses 91 91 ```

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[arjxn-py]

@all-contributors please add @santacodes for code & infra

[allcontributors[bot]]

@arjxn-py

I've put up a pull request to add @santacodes! :tada: