docs: add dhoppe as a contributor (#396)

* docs: update README.md [skip ci]

* docs: update .all-contributorsrc [skip ci]

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>
Co-authored-by: Thorsten Klein <iwilltry42@gmail.com>

.all-contributorsrc

@@ -54,6 +54,16 @@
         "code"
       ]
     },
+    {
+      "login": "dhoppe",
+      "name": "Dennis Hoppe",
+      "avatar_url": "https://avatars3.githubusercontent.com/u/1111056?v=4",
+      "profile": "http://debian-solutions.de",
+      "contributions": [
+        "doc",
+        "example"
+      ]
+    },
     {
       "login": "JohnnyCrazy",
       "name": "Jonas Dellinger",

README.md

@@ -119,6 +119,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <td align="center"><a href="http://www.zenika.com"><img src="https://avatars3.githubusercontent.com/u/25585516?v=4" width="100px;" alt=""/><br /><sub><b>Louis Tournayre</b></sub></a><br /><a href="https://github.com/rancher/k3d/commits?author=louiznk" title="Documentation">📖</a></td>
     <td align="center"><a href="https://github.com/lionelnicolas"><img src="https://avatars3.githubusercontent.com/u/6538664?v=4" width="100px;" alt=""/><br /><sub><b>Lionel Nicolas</b></sub></a><br /><a href="https://github.com/rancher/k3d/commits?author=lionelnicolas" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/toonsevrin.keys"><img src="https://avatars1.githubusercontent.com/u/5507199?v=4" width="100px;" alt=""/><br /><sub><b>Toon Sevrin</b></sub></a><br /><a href="https://github.com/rancher/k3d/commits?author=toonsevrin" title="Code">💻</a></td>
+    <td align="center"><a href="http://debian-solutions.de"><img src="https://avatars3.githubusercontent.com/u/1111056?v=4" width="100px;" alt=""/><br /><sub><b>Dennis Hoppe</b></sub></a><br /><a href="https://github.com/rancher/k3d/commits?author=dhoppe" title="Documentation">📖</a> <a href="#example-dhoppe" title="Examples">💡</a></td>
     <td align="center"><a href="https://dellinger.dev"><img src="https://avatars0.githubusercontent.com/u/3109892?v=4" width="100px;" alt=""/><br /><sub><b>Jonas Dellinger</b></sub></a><br /><a href="#infra-JohnnyCrazy" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a></td>
     <td align="center"><a href="https://github.com/markrexwinkel"><img src="https://avatars2.githubusercontent.com/u/10704814?v=4" width="100px;" alt=""/><br /><sub><b>markrexwinkel</b></sub></a><br /><a href="https://github.com/rancher/k3d/commits?author=markrexwinkel" title="Documentation">📖</a></td>
   </tr>