docs: update .all-contributorsrc [skip ci]

allcontributors[bot] · web-flow · commit 923610caf1c0 · 2020-08-27T17:31:08.000Z
diff --git a/.all-contributorsrc b/.all-contributorsrc
@@ -185,6 +185,15 @@
       "contributions": [
         "ideas"
       ]
+    },
+    {
+      "login": "knutwannheden",
+      "name": "Knut Wannheden",
+      "avatar_url": "https://avatars3.githubusercontent.com/u/408765?v=4",
+      "profile": "https://github.com/knutwannheden",
+      "contributions": [
+        "ideas"
+      ]
     }
   ],
   "contributorsPerLine": 7,
