docs: add stellaprins as a contributor for bug, and doc (#594)

Adds @stellaprins as a contributor for bug, doc.

This was requested by samcunliffe [in this
comment](#593 (comment))

---------

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -326,6 +326,16 @@
       "contributions": [
         "bug"
       ]
+    },
+    {
+      "login": "stellaprins",
+      "name": "Stella Prins",
+      "avatar_url": "https://avatars.githubusercontent.com/u/30465823?v=4",
+      "profile": "https://github.com/stellaprins",
+      "contributions": [
+        "bug",
+        "doc"
+      ]
     }
   ]
 }

README.md

@@ -111,6 +111,7 @@ Note that `uv>=0.6.7` is required to use the `--group` option.
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/jamesprime"><img src="https://avatars.githubusercontent.com/u/17751241?v=4?s=100" width="100px;" alt="James Prime"/><br /><sub><b>James Prime</b></sub></a><br /><a href="#a11y-jamesprime" title="Accessibility">️️️️♿️</a> <a href="#ideas-jamesprime" title="Ideas, Planning, & Feedback">🤔</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/cuteshaun"><img src="https://avatars.githubusercontent.com/u/28014041?v=4?s=100" width="100px;" alt="Andrii Tsapko"/><br /><sub><b>Andrii Tsapko</b></sub></a><br /><a href="#a11y-cuteshaun" title="Accessibility">️️️️♿️</a> <a href="#code-cuteshaun" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="http://james.briant.co.uk"><img src="https://avatars.githubusercontent.com/u/6298711?v=4?s=100" width="100px;" alt="James Briant"/><br /><sub><b>James Briant</b></sub></a><br /><a href="#bug-jamesbriant" title="Bug reports">🐛</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/stellaprins"><img src="https://avatars.githubusercontent.com/u/30465823?v=4?s=100" width="100px;" alt="Stella Prins"/><br /><sub><b>Stella Prins</b></sub></a><br /><a href="#bug-stellaprins" title="Bug reports">🐛</a> <a href="#doc-stellaprins" title="Documentation">📖</a></td>
     </tr>
   </tbody>
 </table>