Updates dependency.md

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Author: quanke

SUMMARY.md

@@ -4,6 +4,7 @@
 * [Dependency](dependency.md)
 * [Client](client.md)
   * [Transport Client](client/transport-client.md)
+  * XPack Transport Client
 * [Document APIs](document-apis.md)
   * [Index API](document-apis/index-api.md)
   * [Get API](document-apis/get-api.md)

dependency.md

@@ -2,7 +2,7 @@
 
 ### Maven Repository
 
-Elasticsearch Java API包已经上传到 [Maven Central](http://search.maven.org/#search|ga|1|a%3A"elasticsearch")
+Elasticsearch Java API包已经上传到 \[Maven Central\]\([http://search.maven.org/\#search\|ga\|1\|a%3A"elasticsearch](http://search.maven.org/#search|ga|1|a%3A"elasticsearch)"\)
 
 在`pom.xml`文件中增加：