Add external_link for co-author

Hello, when I tried to add external_links for my co-authors on the projects of my website, I used markdown grammer [example]( But I failed and there was already a [] outside all authors, like authors: [[A](,B], hugo reported the error: failed to unmarshal YAML: yaml: line 4: did not find expected ‘,’ or ‘]’. So what am I supposed to do If I want to add an external_link like this. Thanks in advance.

Please show your work. We don’t know where you are adding that markup. :slight_smile: