[zh] update spring.io link

Author: Arhell

content/zh-cn/case-studies/appdirect/index.html

@@ -49,7 +49,7 @@ <h2>Impact</h2>
   <h2>With its end-to-end commerce platform for cloud-based products and services, <a href="https://www.appdirect.com/">AppDirect</a> has been helping organizations such as Comcast and GoDaddy simplify the digital supply chain since 2009. </h2>
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   When Director of Software Development Pierre-Alexandre Lacerte started working there in 2014, the company had a monolith application deployed on a "tomcat infrastructure, and the whole release process was complex for what it should be," he says. "There were a lot of manual steps involved, with one engineer building a feature then creating a pull request, and a QA or another engineer validating the feature. Then it gets merged and someone else will take care of the deployment. So we had bottlenecks in the pipeline to ship a feature to production."  <br><br>
-  At the same time, the engineering team of 40 was growing, and the company wanted to add an increasing number of features to its products. As a member of the platform team, Lacerte began hearing from multiple teams that wanted to deploy applications using different frameworks and languages, from <a href="https://nodejs.org/">Node.js</a> to <a href="http://spring.io/projects/spring-boot">Spring Boot Java</a>. He soon realized that in order to both support growth and increase velocity, the company needed a better infrastructure, and a system in which teams are autonomous, can do their own deploys, and be responsible for their services in production.
+  At the same time, the engineering team of 40 was growing, and the company wanted to add an increasing number of features to its products. As a member of the platform team, Lacerte began hearing from multiple teams that wanted to deploy applications using different frameworks and languages, from <a href="https://nodejs.org/">Node.js</a> to <a href="https://spring.io/projects/spring-boot">Spring Boot Java</a>. He soon realized that in order to both support growth and increase velocity, the company needed a better infrastructure, and a system in which teams are autonomous, can do their own deploys, and be responsible for their services in production.
 
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