docs: add dpo as a contributor for code (#335)

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

.all-contributorsrc

@@ -100,7 +100,8 @@
  "avatar_url": "https://avatars.githubusercontent.com/u/38760?v=4",
  "profile": "http://dpo.github.io",
  "contributions": [
- "ideas"
+ "ideas",
+ "code"
  ]
  },
  {

README.md

@@ -109,7 +109,7 @@ This also doesn't explain where each file came from or why they are here. You ca
  </tr>
  <tr>
   <td align="center" valign="top" width="14.28%"><a href="https:/sverhoeven"><img src="https://avatars.githubusercontent.com/u/1713488?v=4?s=100" width="100px;" alt="Stefan Verhoeven"/><br /><sub><b>Stefan Verhoeven</b></sub></a><br /><a href="#code-sverhoeven" title="Code">💻</a> <a href="#ideas-sverhoeven" title="Ideas, Planning, & Feedback">🤔</a></td>
-  <td align="center" valign="top" width="14.28%"><a href="http://dpo.github.io"><img src="https://avatars.githubusercontent.com/u/38760?v=4?s=100" width="100px;" alt="Dominique"/><br /><sub><b>Dominique</b></sub></a><br /><a href="#ideas-dpo" title="Ideas, Planning, & Feedback">🤔</a></td>
+  <td align="center" valign="top" width="14.28%"><a href="http://dpo.github.io"><img src="https://avatars.githubusercontent.com/u/38760?v=4?s=100" width="100px;" alt="Dominique"/><br /><sub><b>Dominique</b></sub></a><br /><a href="#ideas-dpo" title="Ideas, Planning, & Feedback">🤔</a> <a href="#code-dpo" title="Code">💻</a></td>
   <td align="center" valign="top" width="14.28%"><a href="https:/fdiblen"><img src="https://avatars.githubusercontent.com/u/144492?v=4?s=100" width="100px;" alt="fdiblen"/><br /><sub><b>fdiblen</b></sub></a><br /><a href="#code-fdiblen" title="Code">💻</a> <a href="#review-fdiblen" title="Reviewed Pull Requests">👀</a></td>
   <td align="center" valign="top" width="14.28%"><a href="https:/greg-neustroev"><img src="https://avatars.githubusercontent.com/u/32451432?v=4?s=100" width="100px;" alt="Greg Neustroev"/><br /><sub><b>Greg Neustroev</b></sub></a><br /><a href="#code-greg-neustroev" title="Code">💻</a></td>
  </tr>

docs/src/index.md

@@ -70,7 +70,7 @@ This also doesn't explain where each file came from or why they are here. You ca
  </tr>
  <tr>
  <td align="center" valign="top" width="14.28%"><a href="https:/sverhoeven"><img src="https://avatars.githubusercontent.com/u/1713488?v=4?s=100" width="100px;" alt="Stefan Verhoeven"/><br /><sub><b>Stefan Verhoeven</b></sub></a><br /><a href="#code-sverhoeven" title="Code">💻</a> <a href="#ideas-sverhoeven" title="Ideas, Planning, & Feedback">🤔</a></td>
- <td align="center" valign="top" width="14.28%"><a href="http://dpo.github.io"><img src="https://avatars.githubusercontent.com/u/38760?v=4?s=100" width="100px;" alt="Dominique"/><br /><sub><b>Dominique</b></sub></a><br /><a href="#ideas-dpo" title="Ideas, Planning, & Feedback">🤔</a></td>
+ <td align="center" valign="top" width="14.28%"><a href="http://dpo.github.io"><img src="https://avatars.githubusercontent.com/u/38760?v=4?s=100" width="100px;" alt="Dominique"/><br /><sub><b>Dominique</b></sub></a><br /><a href="#ideas-dpo" title="Ideas, Planning, & Feedback">🤔</a> <a href="#code-dpo" title="Code">💻</a></td>
  <td align="center" valign="top" width="14.28%"><a href="https:/fdiblen"><img src="https://avatars.githubusercontent.com/u/144492?v=4?s=100" width="100px;" alt="fdiblen"/><br /><sub><b>fdiblen</b></sub></a><br /><a href="#code-fdiblen" title="Code">💻</a> <a href="#review-fdiblen" title="Reviewed Pull Requests">👀</a></td>
  <td align="center" valign="top" width="14.28%"><a href="https:/greg-neustroev"><img src="https://avatars.githubusercontent.com/u/32451432?v=4?s=100" width="100px;" alt="Greg Neustroev"/><br /><sub><b>Greg Neustroev</b></sub></a><br /><a href="#code-greg-neustroev" title="Code">💻</a></td>
  </tr>