Fix content type header

src/routes/launcher/latest/get.ts

@@ -25,7 +25,7 @@ export const handler = async () => {
 
   return new Response(version[0].id, {
     headers: {
-      'Content-Type': 'application/json',
+      'Content-Type': 'text/plain',
       'X-Signature': generateSignature(version[0].id)
     }
   })

src/routes/launcher/loader/latest/get.ts

@@ -25,7 +25,7 @@ export const handler = async () => {
 
   return new Response(version[0].id, {
     headers: {
-      'Content-Type': 'application/json',
+      'Content-Type': 'text/plain',
       'X-Signature': generateSignature(version[0].id)
     }
   })