The Google Chrome console, like many other browser’s developer tools consoles, automatically parses any URL into a link to that exact page. This is the only way of obtaining such URLs, and, unfortunately, you cannot actually log “custom URLs”.
This means that the following logs will be turned into a clickable link automatically:
console.log('http://example.com');
console.log('www.example.com');
console.log('ftp://mysite.com');
console.log('chrome://history')
console.log('chrome-extension://abcdefg...');
but, on the contrary, the following ones won’t:
console.log('example.com');
console.log('<a href="http://www.example.com">Link</a>');
console.log('javascript:doSomething(someValue);');