update apache-2.0 examples to pass tests

Author: mlinksva

_licenses/apache-2.0.txt

@@ -13,8 +13,8 @@ how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of
 note: The Apache Foundation recommends taking the additional step of adding a boilerplate notice to the header of each source file. You can find the notice at the very end of the license in the appendix.
 
 using:
-  - Elasticsearch: https://github.com/elastic/elasticsearch/blob/master/LICENSE.txt
   - Kubernetes: https://github.com/kubernetes/kubernetes/blob/master/LICENSE
+  - PDF.js: https://github.com/mozilla/pdf.js/blob/master/LICENSE
   - Swift: https://github.com/apple/swift/blob/master/LICENSE.txt
 
 permissions: