docs: add @McG800 as a contributor

.all-contributorsrc

@@ -3631,6 +3631,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "McG800",
+      "name": "Ryan McGuire",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1621107?v=4",
+      "profile": "https://github.com/McG800",
+      "contributions": [
+        "code"
+      ]
     }
   ]
 }

CONTRIBUTORS.md

@@ -520,6 +520,7 @@ Thanks goes to all of these wonderful people ([emoji key](https://github.com/ken
     </tr>
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/rosscdh"><img src="https://avatars.githubusercontent.com/u/397106?v=4?s=110" width="110px;" alt="Ross Crawford-d'Heureuse"/><br /><sub><b>Ross Crawford-d'Heureuse</b></sub></a><br /><a href="https://github.com/snipe/snipe-it/commits?author=rosscdh" title="Code">💻</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/McG800"><img src="https://avatars.githubusercontent.com/u/1621107?v=4?s=110" width="110px;" alt="Ryan McGuire"/><br /><sub><b>Ryan McGuire</b></sub></a><br /><a href="https://github.com/snipe/snipe-it/commits?author=McG800" title="Code">💻</a></td>
     </tr>
   </tbody>
 </table>