Fix PHPDoc references.

[AlexHowansky]

Hello, here is a patch to fix some simple errors in PHP docblocks that lead to problems with PHPStan and IDE autocompletion.

Given the following code:

use Bramus\Ansi\Ansi;
use Bramus\Ansi\Writers\BufferWriter;
use Bramus\Ansi\ControlSequences\EscapeSequences\Enums\SGR;

$ansi = new Ansi(new BufferWriter());
$ansi->color([SGR::COLOR_FG_WHITE])->get();

Running PHPStan on this code will yield the following errors:

1) Parameter #1 $writer of class Bramus\Ansi\Ansi constructor expects
    Bramus\Ansi\Writer\WriterInterface|null,
    Bramus\Ansi\Writers\BufferWriter given.

2) Call to method get() on an unknown class Bramus\Ansi\Traits\EscapeSequences\Ansi.

The first issue is just a typo, Writer versus Writers in a number of docblock attributes in Ansi.php.

The second issue is a result of the traits using @return Ansi but Ansi is not in the same namespace as the trait. This was fixed simply by adding the appropriate use statement.

All tests passing, no functionality added or changed.

[bramus]

Thanks!

[bramus]

New release tagged: 3.0.4

[AlexHowansky]

Looks good, thank you!