Fix deadlinks (#729)

Author: wu-sheng

.dlc.json

@@ -26,6 +26,9 @@
     },
     {
       "pattern": "^https://twitter.com*"
+    },
+    {
+      "pattern": "^https://blogs.oracle.com/javamagazine/post/a-peek-into-java-17-continuing-the-drive-to-encapsulate-the-java-runtime-internals"
     }
   ],
   "timeout": "10s",

docs/en/setup/service-agent/java-agent/Java-Plugin-Development-Guide.md

@@ -11,7 +11,7 @@ We also provide the [plugin test tool](#plugin-test-tool) to verify the data col
 ## Concepts
 ### Span
 The span is an important and recognized concept in the distributed tracing system. Learn about the **span** from the
-[Google Dapper Paper](https://research.google.com/pubs/pub36356.html)  and
+[Google Dapper Paper](https://research.google/pubs/dapper-a-large-scale-distributed-systems-tracing-infrastructure/)  and
 [OpenTracing](http://opentracing.io)
 
 SkyWalking has supported OpenTracing and OpenTracing-Java API since 2017. Our concepts of the span are similar to that of the Google Dapper Paper and OpenTracing. We have also extended the span.