Update part9c.md

Fixes case of import 
to 

import { newEntrySchema } from './utils'; 

from 

import { NewEntrySchema } from './utils';

Author: Collaboration95

src/content/9/en/part9c.md

@@ -1654,7 +1654,7 @@ So besides the type _NewDiaryEntry_ we have also the Zod schema _NewEntrySchema_
 
 ```js
 import { z } from 'zod';
-import { NewEntrySchema } from './utils'
+import { newEntrySchema } from './utils'
 
 export interface DiaryEntry {
   id: number;