Fix the get test

Author: cvx

tests/dummy/app/pods/examples/network/other/get-request/route.js

@@ -4,7 +4,7 @@ import fetch from 'fetch';
 export default Route.extend({
 
   async model() {
-    let response = await fetch('/api/posts', { method: 'post' });
+    let response = await fetch('/api/posts');
     return await response.json();
   }
 

tests/fastboot/network-mocking-test.js

@@ -68,7 +68,7 @@ module('Fastboot | network mocking', function(hooks) {
   });
 
   test('it can mock a get request', async function(assert) {
-    await mockServer.post('/api/posts', [
+    await mockServer.get('/api/posts', [
       { id: 1, title: 'get post'},
     ]);