Added content to Rest in Golang section (#2234)

* Added content to Rest in Golang section

The tutorial link are specific to Go language

* Update content/roadmaps/109-golang/content/107-go-api-clients/100-rest/readme.md

* Update content/roadmaps/109-golang/content/107-go-api-clients/100-rest/readme.md

Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

content/roadmaps/109-golang/content/107-go-api-clients/100-rest/readme.md

@@ -1 +1,8 @@
-# Rest
+# REST
+
+REST (Representational State Transfer) API (Application Programming Interface) is used to deliver user functionality when dealing with websites. HTTP requests are used to communicate with REST APIs so users can navigate a URL website. These URLs can return certain information that is stored as part of the API.
+
+<ResourceGroupTitle>Free Content</ResourceGroupTitle>
+<BadgeLink badgeText='Read' colorScheme="yellow" href='https://go.dev/doc/tutorial/web-service-gin'>Tutorial</BadgeLink>
+<BadgeLink badgeText='Watch' colorScheme="red" href='https://youtube.com/playlist?list=PLzUGFf4GhXBL4GHXVcMMvzgtO8-WEJIoY'>RESTful APIs Series</BadgeLink>
+<BadgeLink badgeText='Read' colorScheme="yellow" href='https://www.geeksforgeeks.org/rest-api-introduction/'>Introduction to RESTful APIs</BadgeLink>