Update apiary.apib

Co-authored-by: Roman Braciník <roman.bracinik@keboola.com>

Author: jirkasemmler

apiary.apib

@@ -5761,7 +5761,7 @@ Create new or fetch existing credentials for dedicated workspace.
 
 Get details of specified workspace credentials
 
-### Delete credetnails [DELETE /v2/storage/workspaces/{workspaceId}/credentials/{id}]
+### Delete credentials [DELETE /v2/storage/workspaces/{workspaceId}/credentials/{id}]
 
 Delete specified workspace credentials. User will be invalidated