Simplify Caliban example and make it more readable

Author: ghostdogpr

src/content/code/language-support/scala/server/caliban.md

@@ -7,27 +7,23 @@ github: ghostdogpr/caliban
 
 An example of a GraphQL schema and query with `caliban`:
 ```scala
+import caliban.GraphQL.graphQL
+import caliban.RootResolver
+
 case class Character(name: String, age: Int)
+
 def getCharacters(): List[Character] = ??? 
+
 // schema
 case class Queries(characters: List[Character])
+
 // resolver
 val queries = Queries(getCharacters)
-import caliban.GraphQL.graphQL
-import caliban.RootResolver
-val api = graphQL(RootResolver(queries))
+
+val query = "{ characters { name } }"
 for {
+  api          = graphQL(RootResolver(queries))
   interpreter <- api.interpreter
-} yield interpreter
-case class GraphQLResponse[+E](data: ResponseValue, errors: List[E])
-val query = """
-  {
-    characters {
-      name
-    }
-  }"""
-for {
-  result <- interpreter.execute(query)
-  _      <- zio.console.putStrLn(result.data.toString)
-} yield ()
+  result      <- interpreter.execute(query)
+} yield result
 ```