docs: add samcunliffe as a contributor for tutorial (#582)

Adds @samcunliffe as a contributor for tutorial.

This was requested by samcunliffe [in this
comment](#558 (comment))

---------

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>

Author: allcontributors[bot]

.all-contributorsrc

@@ -43,7 +43,8 @@
         "question",
         "review",
         "talk",
-        "test"
+        "test",
+        "tutorial"
       ]
     },
     {

README.md

@@ -77,7 +77,7 @@ uv pip install -e ".[dev]"
   <tbody>
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://paddyroddy.github.io"><img src="https://avatars.githubusercontent.com/u/15052188?v=4?s=100" width="100px;" alt="Patrick J. Roddy"/><br /><sub><b>Patrick J. Roddy</b></sub></a><br /><a href="#ideas-paddyroddy" title="Ideas, Planning, & Feedback">🤔</a> <a href="#bug-paddyroddy" title="Bug reports">🐛</a> <a href="#code-paddyroddy" title="Code">💻</a> <a href="#content-paddyroddy" title="Content">🖋</a> <a href="#doc-paddyroddy" title="Documentation">📖</a> <a href="#eventOrganizing-paddyroddy" title="Event Organizing">📋</a> <a href="#projectManagement-paddyroddy" title="Project Management">📆</a> <a href="#question-paddyroddy" title="Answering Questions">💬</a> <a href="#review-paddyroddy" title="Reviewed Pull Requests">👀</a> <a href="#talk-paddyroddy" title="Talks">📢</a> <a href="#test-paddyroddy" title="Tests">⚠️</a></td>
-      <td align="center" valign="top" width="14.28%"><a href="http://scnlf.me"><img src="https://avatars.githubusercontent.com/u/1836192?v=4?s=100" width="100px;" alt="Sam Cunliffe"/><br /><sub><b>Sam Cunliffe</b></sub></a><br /><a href="#ideas-samcunliffe" title="Ideas, Planning, & Feedback">🤔</a> <a href="#bug-samcunliffe" title="Bug reports">🐛</a> <a href="#code-samcunliffe" title="Code">💻</a> <a href="#content-samcunliffe" title="Content">🖋</a> <a href="#doc-samcunliffe" title="Documentation">📖</a> <a href="#eventOrganizing-samcunliffe" title="Event Organizing">📋</a> <a href="#projectManagement-samcunliffe" title="Project Management">📆</a> <a href="#question-samcunliffe" title="Answering Questions">💬</a> <a href="#review-samcunliffe" title="Reviewed Pull Requests">👀</a> <a href="#talk-samcunliffe" title="Talks">📢</a> <a href="#test-samcunliffe" title="Tests">⚠️</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="http://scnlf.me"><img src="https://avatars.githubusercontent.com/u/1836192?v=4?s=100" width="100px;" alt="Sam Cunliffe"/><br /><sub><b>Sam Cunliffe</b></sub></a><br /><a href="#ideas-samcunliffe" title="Ideas, Planning, & Feedback">🤔</a> <a href="#bug-samcunliffe" title="Bug reports">🐛</a> <a href="#code-samcunliffe" title="Code">💻</a> <a href="#content-samcunliffe" title="Content">🖋</a> <a href="#doc-samcunliffe" title="Documentation">📖</a> <a href="#eventOrganizing-samcunliffe" title="Event Organizing">📋</a> <a href="#projectManagement-samcunliffe" title="Project Management">📆</a> <a href="#question-samcunliffe" title="Answering Questions">💬</a> <a href="#review-samcunliffe" title="Reviewed Pull Requests">👀</a> <a href="#talk-samcunliffe" title="Talks">📢</a> <a href="#test-samcunliffe" title="Tests">⚠️</a> <a href="#tutorial-samcunliffe" title="Tutorials">✅</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://www.davidstansby.com"><img src="https://avatars.githubusercontent.com/u/6197628?v=4?s=100" width="100px;" alt="David Stansby"/><br /><sub><b>David Stansby</b></sub></a><br /><a href="#ideas-dstansby" title="Ideas, Planning, & Feedback">🤔</a> <a href="#bug-dstansby" title="Bug reports">🐛</a> <a href="#code-dstansby" title="Code">💻</a> <a href="#content-dstansby" title="Content">🖋</a> <a href="#doc-dstansby" title="Documentation">📖</a> <a href="#eventOrganizing-dstansby" title="Event Organizing">📋</a> <a href="#projectManagement-dstansby" title="Project Management">📆</a> <a href="#review-dstansby" title="Reviewed Pull Requests">👀</a> <a href="#test-dstansby" title="Tests">⚠️</a></td>
       <td align="center" valign="top" width="14.28%"><a href="http://matt-graham.github.io"><img src="https://avatars.githubusercontent.com/u/6746980?v=4?s=100" width="100px;" alt="Matt Graham"/><br /><sub><b>Matt Graham</b></sub></a><br /><a href="#bug-matt-graham" title="Bug reports">🐛</a> <a href="#code-matt-graham" title="Code">💻</a> <a href="#content-matt-graham" title="Content">🖋</a> <a href="#doc-matt-graham" title="Documentation">📖</a> <a href="#design-matt-graham" title="Design">🎨</a> <a href="#eventOrganizing-matt-graham" title="Event Organizing">📋</a> <a href="#review-matt-graham" title="Reviewed Pull Requests">👀</a> <a href="#talk-matt-graham" title="Talks">📢</a> <a href="#test-matt-graham" title="Tests">⚠️</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/sfmig"><img src="https://avatars.githubusercontent.com/u/33267254?v=4?s=100" width="100px;" alt="sfmig"/><br /><sub><b>sfmig</b></sub></a><br /><a href="#bug-sfmig" title="Bug reports">🐛</a> <a href="#code-sfmig" title="Code">💻</a> <a href="#content-sfmig" title="Content">🖋</a> <a href="#review-sfmig" title="Reviewed Pull Requests">👀</a> <a href="#test-sfmig" title="Tests">⚠️</a></td>