improve wording

Author: staabm

src/Rules/Playground/PhpdocCommentRule.php

@@ -47,7 +47,7 @@ public function processNode(Node $node, Scope $scope): array
 				}
 			}
 
-			$errors[] =	RuleErrorBuilder::message('Comment contains phpdoc-tag but does not start with /** tag.')
+			$errors[] =	RuleErrorBuilder::message('Comment contains PHPDoc tag but does not start with /** prefix.')
 				->identifier('phpstanPlayground.noPhpdoc')
 				->build();
 		}

tests/PHPStan/Rules/Playground/PhpdocCommentRuleTest.php

@@ -20,11 +20,11 @@ public function testRule(): void
 	{
 		$this->analyse([__DIR__ . '/data/comments.php'], [
 			[
-				'Comment contains phpdoc-tag but does not start with /** tag.',
+				'Comment contains PHPDoc tag but does not start with /** prefix.',
 				13,
 			],
 			[
-				'Comment contains phpdoc-tag but does not start with /** tag.',
+				'Comment contains PHPDoc tag but does not start with /** prefix.',
 				23,
 			],
 		]);