docs: add joshuakgoldberg as a contributor for doc (#415)

Adds @JoshuaKGoldberg as a contributor for doc.

This was requested by JoshuaKGoldberg [in this
comment](#96 (comment))

---------

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -10,7 +10,8 @@
         "code",
         "maintenance",
         "review",
-        "tool"
+        "tool",
+        "doc"
       ],
       "login": "JoshuaKGoldberg",
       "name": "Josh Goldberg",

README.md

@@ -124,7 +124,7 @@ Thanks! 💖
       <td align="center" valign="top" width="14.28%"><a href="https://blog.johnnyreilly.com/"><img src="https://avatars.githubusercontent.com/u/1010525?v=4?s=100" width="100px;" alt="John Reilly"/><br /><sub><b>John Reilly</b></sub></a><br /><a href="https://github.com/JoshuaKGoldberg/template-typescript-node-package/commits?author=johnnyreilly" title="Code">💻</a></td>
     </tr>
     <tr>
-      <td align="center" valign="top" width="14.28%"><a href="http://www.joshuakgoldberg.com"><img src="https://avatars.githubusercontent.com/u/3335181?v=4?s=100" width="100px;" alt="Josh Goldberg"/><br /><sub><b>Josh Goldberg</b></sub></a><br /><a href="https://github.com/JoshuaKGoldberg/template-typescript-node-package/issues?q=author%3AJoshuaKGoldberg" title="Bug reports">🐛</a> <a href="https://github.com/JoshuaKGoldberg/template-typescript-node-package/commits?author=JoshuaKGoldberg" title="Code">💻</a> <a href="#maintenance-JoshuaKGoldberg" title="Maintenance">🚧</a> <a href="https://github.com/JoshuaKGoldberg/template-typescript-node-package/pulls?q=is%3Apr+reviewed-by%3AJoshuaKGoldberg" title="Reviewed Pull Requests">👀</a> <a href="#tool-JoshuaKGoldberg" title="Tools">🔧</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="http://www.joshuakgoldberg.com"><img src="https://avatars.githubusercontent.com/u/3335181?v=4?s=100" width="100px;" alt="Josh Goldberg"/><br /><sub><b>Josh Goldberg</b></sub></a><br /><a href="https://github.com/JoshuaKGoldberg/template-typescript-node-package/issues?q=author%3AJoshuaKGoldberg" title="Bug reports">🐛</a> <a href="https://github.com/JoshuaKGoldberg/template-typescript-node-package/commits?author=JoshuaKGoldberg" title="Code">💻</a> <a href="#maintenance-JoshuaKGoldberg" title="Maintenance">🚧</a> <a href="https://github.com/JoshuaKGoldberg/template-typescript-node-package/pulls?q=is%3Apr+reviewed-by%3AJoshuaKGoldberg" title="Reviewed Pull Requests">👀</a> <a href="#tool-JoshuaKGoldberg" title="Tools">🔧</a> <a href="https://github.com/JoshuaKGoldberg/template-typescript-node-package/commits?author=JoshuaKGoldberg" title="Documentation">📖</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://webpro.nl"><img src="https://avatars.githubusercontent.com/u/456426?v=4?s=100" width="100px;" alt="Lars Kappert"/><br /><sub><b>Lars Kappert</b></sub></a><br /><a href="https://github.com/JoshuaKGoldberg/template-typescript-node-package/commits?author=webpro" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://navinmoorthy.me/"><img src="https://avatars.githubusercontent.com/u/39694575?v=4?s=100" width="100px;" alt="Navin Moorthy"/><br /><sub><b>Navin Moorthy</b></sub></a><br /><a href="https://github.com/JoshuaKGoldberg/template-typescript-node-package/issues?q=author%3Anavin-moorthy" title="Bug reports">🐛</a> <a href="https://github.com/JoshuaKGoldberg/template-typescript-node-package/commits?author=navin-moorthy" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/NazCodeland"><img src="https://avatars.githubusercontent.com/u/113494366?v=4?s=100" width="100px;" alt="NazCodeland"/><br /><sub><b>NazCodeland</b></sub></a><br /><a href="https://github.com/JoshuaKGoldberg/template-typescript-node-package/commits?author=NazCodeland" title="Code">💻</a></td>