B2B-2530: Unskip GraphQL cache tests skipped due to DEVOPS-4924

- Adjusted review comments

Author: avattam06

dev/tests/api-functional/testsuite/Magento/GraphQl/PageCache/Cms/BlockCacheTest.php

@@ -98,7 +98,7 @@ public function testCacheIsInvalidatedOnBlockUpdate()
         $newBlockContent = 'New block content!!!';
         $this->updateBlockContent($fixtureBlockIdentifier, $newBlockContent);
 
-        // Verify we obtain a cache MISS update on the fixture block
+        // Verify we obtain a cache MISS on the fixture block query after the content update
         $fixtureBlockMissResponse = $this->assertCacheMissAndReturnResponse(
             $fixtureBlockQuery,
             [CacheIdCalculator::CACHE_ID_HEADER => $cacheIdOfFixtureBlock]