Tests: minor docs fixes

* Fix class description.
* Improve type specificity in docblocks.

Author: jrfnl

tests/Core/Config/ReportWidthTest.php

@@ -255,7 +255,7 @@ public function testReportWidthInputHandling($input, $expected)
     /**
      * Data provider.
      *
-     * @return array
+     * @return array<string, array<string, mixed>>
      */
     public static function dataReportWidthInputHandling()
     {

tests/Core/Filters/AbstractFilterTestCase.php

@@ -1,6 +1,6 @@
 <?php
 /**
- * Tests for the \PHP_CodeSniffer\Filters\GitModified class.
+ * Abstract Testcase class for testing Filters.
  *
  * @author    Juliette Reinders Folmer <phpcs_nospam@adviesenzo.nl>
  * @copyright 2023 PHPCSStandards Contributors

tests/Core/Tokenizer/DoubleArrowTest.php

@@ -43,7 +43,7 @@ public function testDoubleArrow($testMarker)
      *
      * @see testDoubleArrow()
      *
-     * @return array
+     * @return array<string, array<string>>
      */
     public static function dataDoubleArrow()
     {
@@ -128,7 +128,7 @@ public function testMatchArrow($testMarker)
      *
      * @see testMatchArrow()
      *
-     * @return array
+     * @return array<string, array<string>>
      */
     public static function dataMatchArrow()
     {
@@ -215,7 +215,7 @@ public function testFnArrow($testMarker)
      *
      * @see testFnArrow()
      *
-     * @return array
+     * @return array<string, array<string>>
      */
     public static function dataFnArrow()
     {

tests/Core/Tokenizer/ShortArrayTest.php

@@ -48,7 +48,7 @@ public function testSquareBrackets($testMarker)
      *
      * @see testSquareBrackets()
      *
-     * @return array
+     * @return array<string, array<string>>
      */
     public static function dataSquareBrackets()
     {
@@ -116,7 +116,7 @@ public function testShortArrays($testMarker)
      *
      * @see testShortArrays()
      *
-     * @return array
+     * @return array<string, array<string>>
      */
     public static function dataShortArrays()
     {