docs: add MartinWehking as a contributor for code (#401)

Adds @MartinWehking as a contributor for code.

This was requested by vhscampos [in this
comment](#394 (comment))

[skip ci]

---------

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -405,6 +405,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "MartinWehking",
+      "name": "Martin Wehking",
+      "avatar_url": "https://avatars.githubusercontent.com/u/9721817?v=4",
+      "profile": "https://github.com/MartinWehking",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -6,7 +6,7 @@
 </div>
 
 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-[![All Contributors](https://img.shields.io/badge/all_contributors-39-orange.svg?style=flat-square)](#contributors-)
+[![All Contributors](https://img.shields.io/badge/all_contributors-44-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 ![Continuous Integration](https://github.com/ARM-software/acle/actions/workflows/ci.yml/badge.svg)
 
@@ -143,6 +143,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     </tr>
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/AlfieRichardsArm"><img src="https://avatars.githubusercontent.com/u/156316945?v=4?s=100" width="100px;" alt="Alfie Richards"/><br /><sub><b>Alfie Richards</b></sub></a><br /><a href="https://github.com/ARM-software/acle/commits?author=AlfieRichardsArm" title="Code">💻</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/MartinWehking"><img src="https://avatars.githubusercontent.com/u/9721817?v=4?s=100" width="100px;" alt="Martin Wehking"/><br /><sub><b>Martin Wehking</b></sub></a><br /><a href="https://github.com/ARM-software/acle/commits?author=MartinWehking" title="Code">💻</a></td>
     </tr>
   </tbody>
 </table>