Fix issue with tag description end detection.

Author: jaapio

src/DocBlock/Tags/Factory/AbstractPHPStanFactory.php

@@ -73,15 +73,13 @@ public function __construct(PHPStanFactory ...$factories)
 
     public function create(string $tagLine, ?TypeContext $context = null): Tag
     {
-        $tokens = $this->tokenizeLine($tagLine);
+        $tokens = $this->tokenizeLine($tagLine . "\n");
         $ast = $this->parser->parseTag($tokens);
-        if (class_exists(ParserConfig::class) === false) {
-            if (property_exists($ast->value, 'description') === true) {
-                $ast->value->setAttribute(
-                    'description',
-                    $ast->value->description . $tokens->joinUntil(Lexer::TOKEN_END)
-                );
-            }
+        if (property_exists($ast->value, 'description') === true) {
+            $ast->value->setAttribute(
+                'description',
+                rtrim($ast->value->description . $tokens->joinUntil(Lexer::TOKEN_END), "\n")
+            );
         }
 
         if ($context === null) {