prevent ENFILE: file table overflow during test runs

Author: sarahs

tests/meta/repository-references.js

@@ -57,7 +57,13 @@ describe('check for repository references', () => {
       'lib/excluded-links.js',
       'content/early-access',
       'data/early-access',
-      'data/release-notes' // These include links to internal issues in Liquid comments
+      'data/release-notes', // These include links to internal issues in Liquid comments.
+      '**/*.png', // Do not check images or font files.
+      '**/*.jpg', // We could just put all of assets/* here, but that would prevent any 
+      '**/*.gif', // READMEs or other text-based files from being checked.
+      '**/*.pdf',
+      '**/*.ico',
+      '**/*.woff',
     ]
   })