docs(CoderSniffUnitTest): Fix incorrect comment for CoderSniffUnitTest::checkAllSniffCodes()

coder_sniffer/Drupal/Test/CoderSniffUnitTest.php

@@ -466,7 +466,7 @@ abstract class CoderSniffUnitTest extends TestCase
 
 
     /**
-     * False if just the current sniff should be checked, false if all sniffs should be checked.
+     * False if just the current sniff should be checked, true if all sniffs should be checked.
      *
      * @return bool
      */

coder_sniffer/Drupal/Test/bad/BadUnitTest.php

@@ -460,7 +460,7 @@ class BadUnitTest extends CoderSniffUnitTest
 
 
     /**
-     * False if just the current sniff should be checked, false if all sniffs should be checked.
+     * False if just the current sniff should be checked, true if all sniffs should be checked.
      *
      * @return bool
      */

coder_sniffer/Drupal/Test/good/GoodUnitTest.php

@@ -76,7 +76,7 @@ class GoodUnitTest extends CoderSniffUnitTest
 
 
     /**
-     * False if just the current sniff should be checked, false if all sniffs should be checked.
+     * False if just the current sniff should be checked, true if all sniffs should be checked.
      *
      * @return bool
      */

coder_sniffer/DrupalPractice/Test/good/GoodUnitTest.php

@@ -63,7 +63,7 @@ class GoodUnitTest extends CoderSniffUnitTest
 
 
     /**
-     * False if just the current sniff should be checked, false if all sniffs should be checked.
+     * False if just the current sniff should be checked, true if all sniffs should be checked.
      *
      * @return bool
      */