fix comments

packages/next/server/theme.ts

@@ -47,8 +47,9 @@ export const zTheme = z
         remark42: z
           .object({
             host: z.string(),
-            siteId: z.string()
+            site_id: z.string()
           })
+          .nonstrict()
           .optional()
       })
       .optional()
@@ -59,6 +60,6 @@ export type ITheme = z.infer<typeof zTheme>
 
 export function getTheme () {
   return zTheme.parse(
-    yaml.safeLoad(fs.readFileSync(buildPath(THEME_FILENAME), 'utf-8'))
+    yaml.load(fs.readFileSync(buildPath(THEME_FILENAME), 'utf-8'))
   )
 }