docs: update .all-contributorsrc [skip ci]

.all-contributorsrc

@@ -365,7 +365,8 @@
       "avatar_url": "https://avatars.githubusercontent.com/u/18387748?v=4",
       "profile": "http://www.myweb.ttu.edu/ngu00336/",
       "contributions": [
-        "code"
+        "code",
+        "plugin"
       ]
     },
     {