The documentation for the function FormattableMarkup::placeholderFormat contains typos

API page: https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Component%21Rend...

Expected result

$this->placeholderFormat('link text, [':foo' => $some_variable]);
$this->placeholderFormat('link text, [':foo' => $some_variable]);
$this->placeholderFormat('@foo, [':foo' => $some_variable]);
// Use : placeholder inside an HTML tag.
$this->placeholderFormat(', [':foo' => '/image.png']);

Actual result

$this->placeholderFormat('link text, ['@foo' => $some_variable]);
$this->placeholderFormat('link text, ['@foo' => $some_variable]);
$this->placeholderFormat('@foo, ['@foo' => $some_variable]);
// Use : placeholder inside an HTML tag.
$this->placeholderFormat(', ['@foo' => '/image.png']);