Fix images in descriptions, show the OAuth redirect URI
- Images in Markdown of API pages, like the description of an operation, and in descriptions of
<AutoTypeTable />props no longer crash the page with "Element type is invalid". - The OAuth panel of the playground shows the
redirect_uriof the authorization code and implicit flows, with a button to copy it: theoauthRedirectUrlroute when set, otherwise the current page. - The Authorize row of OAuth schemes in the playground is one button, filling the row.