AOS-295: Update report description

Author: HeyImPhil

src/Reports/LargeDocumentReport.php

@@ -24,7 +24,7 @@ class LargeDocumentReport extends Report
     public function description(): string
     {
         if (!$this->isReportActive()) {
-            return 'This report requires the SEARCH_INDEX_FILES environment variable and file extension.';
+            return 'This report requires the SearchServiceExtension being applied to Files.';
         }
 
         return sprintf(

tests/Reports/LargeDocumentReportTest.php

@@ -38,7 +38,7 @@ public function testDescription(): void
         // Removing extension should result in a new description
         $this->removeFileExtension();
         $this->assertEquals(
-            'This report requires the SEARCH_INDEX_FILES environment variable and file extension.',
+            'This report requires the SearchServiceExtension being applied to Files.',
             $report->description()
         );