Update changesets things

Author: emmatown

.changeset/README.md

@@ -5,4 +5,4 @@ with multi-package repos, or single-package repos to help you version and publis
 find the full documentation for it [in our repository](https://github.com/changesets/changesets)
 
 We have a quick list of common questions to get you started engaging with this project in
-[our documentation](https://github.com/changesets/changesets/blob/master/docs/common-questions.md)
+[our documentation](https://github.com/changesets/changesets/blob/main/docs/common-questions.md)

.changeset/config.json

@@ -2,10 +2,12 @@
   "$schema": "https://unpkg.com/@changesets/config@0.3.0/schema.json",
   "changelog": [
     "@changesets/changelog-github",
-    { "repo": "Thinkmill/untitled-docs" }
+    {
+      "repo": "Thinkmill/untitled-docs"
+    }
   ],
   "commit": false,
   "linked": [],
   "access": "public",
-  "baseBranch": "master"
-}
+  "baseBranch": "main"
+}