Fix to post as body not as query

Author: maximedegreve

Sources/App/Tools/Marvel/GraphQueries.swift

@@ -140,7 +140,7 @@ final class GraphQueries {
             }
 
             query {
-              project(pk: \(pk) {
+              project(pk: \(pk)) {
                 pk
                 name
                 prototypeUrl

Sources/App/Tools/Marvel/Marvel.swift

@@ -120,15 +120,15 @@ final class Marvel {
 
     func graphQL(query: String, accessToken: String) throws -> Response{
 
-        let body: Node = [
+        let body: JSON = [
             "query": .string(query)
             ]
 
-
         let request = Request(method: .post, uri: "\(apiUrl)/graphql/")
-        request.query = body
+        request.body = body.makeBody()
         request.headers = [
-            "Authorization" : "Bearer \(accessToken)"
+            "Authorization" : "Bearer \(accessToken)",
+            "Content-Type": "application/json"
         ]
         return try drop.client.respond(to: request)