docs: add rtilling as a contributor for ideas (#484)

Author: allcontributors[bot]

Diff for: .all-contributorsrc

@@ -458,6 +458,15 @@
         "mentoring",
         "review"
       ]
+    },
+    {
+      "login": "rtilling",
+      "name": "rtilling",
+      "avatar_url": "https://avatars.githubusercontent.com/u/52253385?v=4",
+      "profile": "https://github.com/rtilling",
+      "contributions": [
+        "ideas"
+      ]
     }
   ],
   "contributorsPerLine": 7,

Diff for: CONTRIBUTORS.rst

@@ -58,6 +58,7 @@ Thanks goes to these wonderful people (`emoji key <https://allcontributors.org/d
           <td align="center" valign="top" width="14.28%"><a href="https://github.com/ravindraK08"><img src="https://avatars.githubusercontent.com/u/124502384?v=4?s=100" width="100px;" alt="ravindraK08"/><br /><sub><b>ravindraK08</b></sub></a><br /><a href="https://github.com/icesat2py/icepyx/pulls?q=is%3Apr+reviewed-by%3AravindraK08" title="Reviewed Pull Requests">👀</a></td>
         </tr>
         <tr>
+          <td align="center" valign="top" width="14.28%"><a href="https://github.com/rtilling"><img src="https://avatars.githubusercontent.com/u/52253385?v=4?s=100" width="100px;" alt="rtilling"/><br /><sub><b>rtilling</b></sub></a><br /><a href="#ideas-rtilling" title="Ideas, Planning, & Feedback">🤔</a></td>
           <td align="center" valign="top" width="14.28%"><a href="https://github.com/SmithB"><img src="https://avatars.githubusercontent.com/u/2279144?v=4?s=100" width="100px;" alt="smithb"/><br /><sub><b>smithb</b></sub></a><br /><a href="#ideas-smithb" title="Ideas, Planning, & Feedback">🤔</a></td>
           <td align="center" valign="top" width="14.28%"><a href="https://github.com/tedmaksym"><img src="https://avatars.githubusercontent.com/u/13255911?v=4?s=100" width="100px;" alt="tedmaksym"/><br /><sub><b>tedmaksym</b></sub></a><br /><a href="#ideas-tedmaksym" title="Ideas, Planning, & Feedback">🤔</a></td>
           <td align="center" valign="top" width="14.28%"><a href="https://github.com/trevorskaggs"><img src="https://avatars.githubusercontent.com/u/1276123?v=4?s=100" width="100px;" alt="trevorskaggs"/><br /><sub><b>trevorskaggs</b></sub></a><br /><a href="https://github.com/icesat2py/icepyx/issues?q=author%3Atrevorskaggs" title="Bug reports">🐛</a> <a href="https://github.com/icesat2py/icepyx/commits?author=trevorskaggs" title="Code">💻</a></td>
@@ -69,6 +70,6 @@ Thanks goes to these wonderful people (`emoji key <https://allcontributors.org/d
     <!-- markdownlint-restore -->
     <!-- prettier-ignore-end -->
 
-<!-- ALL-CONTRIBUTORS-LIST:END -->
+    <!-- ALL-CONTRIBUTORS-LIST:END -->
 
 This project follows the `all-contributors <https://github.com/all-contributors/all-contributors>`_ specification. Contributions of any kind welcome!