Add 2 new showcase entries (#285)

Co-authored-by: Luffy <52o@qq52o.cn>

README.md

@@ -146,6 +146,8 @@ A curated list of awesome things related to [docsify](https://docsify.js.org)
 - [CASE Doc](https://docs.case.app/) - Documentation for [CASE](https://case.app/), an Open Source tool for building web applications in minutes.
 - [文档箱](https://yjava.cn/) - Documentation for thoughts.
 - [LIGMATV](https://ligmatv.vercel.app) - Home of my open blogs 📖.
+- [UIBUILDER for Node-RED documentation](https://totallyinformation.github.io/node-red-contrib-uibuilder) - Documentation for the UIBUILDER contributed nodes for Node-RED, the low-code development tool.
+- [IT Standards for NHS England](https://nhsengland.github.io/it-standards) - Some guidance on the use of technology in NHS England.
 
 ## Community Resources