Updated documentation links

build.gradle.kts

@@ -277,7 +277,8 @@ val dokka by tasks.getting(DokkaTask::class) {
     }
 
     externalDocumentationLink {
-        url = url("https://static.javadoc.io/com.google.code.gson/gson/${dependencyVersion("gson")}/")
+        url = url("https://www.javadoc.io/com.google.code.gson/gson/${dependencyVersion("gson")}/")
+        packageListUrl = url("$url/element-list")
     }
 
     externalDocumentationLink {
@@ -292,6 +293,10 @@ val dokka by tasks.getting(DokkaTask::class) {
         url = url("https://http4k.org/api/")
     }
 
+    externalDocumentationLink {
+        url = url("https://api.ktor.io/1.2.4/")  // TODO replace by ktorVersion
+    }
+
     linkMapping {
         dir = "src/main/kotlin"
         url = "https://dgit.cs.uni-saarland.de/pseuco/pseuco-ide/blob/master/src/main/kotlin"