docs: add tovrstra as a contributor for doc (#764)

* docs: update README.md [skip ci]

* docs: update .all-contributorsrc [skip ci]

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

.all-contributorsrc

@@ -339,31 +339,41 @@
       "profile": "https://github.com/dnoliver",
       "contributions": [
         "bug"
-        ]
-     },
-     {
+      ]
+    },
+    {
       "login": "basnijholt",
       "name": "Bas Nijholt",
       "avatar_url": "https://avatars.githubusercontent.com/u/6897215?v=4",
       "profile": "http://www.nijho.lt",
       "contributions": [
         "ideas"
       ]
-     },
-     {
+    },
+    {
       "login": "rgommers",
       "name": "Ralf Gommers",
       "avatar_url": "https://avatars.githubusercontent.com/u/98330?v=4",
       "profile": "https://github.com/rgommers/",
       "contributions": [
         "ideas"
       ]
+    },
+    {
+      "login": "tovrstra",
+      "name": "Toon Verstraelen",
+      "avatar_url": "https://avatars.githubusercontent.com/u/99431?v=4",
+      "profile": "https://github.com/tovrstra",
+      "contributions": [
+        "doc"
+      ]
     }
   ],
   "contributorsPerLine": 7,
   "projectName": "nbQA",
   "projectOwner": "nbQA-dev",
   "repoType": "github",
   "repoHost": "https://github.com",
-  "skipCi": true
+  "skipCi": true,
+  "commitConvention": "angular"
 }