svelte: Fix typo in LSP config for inlayHints (#14614)

https://github.com/yioneko/vtsls/blob/9b51c5b177860b9b0e527321c47bb4e0d23f1388/packages/service/configuration.schema.json#L158

Before:
![Screenshot from 2024-07-17
02-45-37](https://github.com/user-attachments/assets/15f67b7b-ed29-418a-b6a5-23601c1ad820)

After:
![Screenshot from 2024-07-17
02-38-37](https://github.com/user-attachments/assets/c6cb71fc-70f4-4ea3-91d4-a184342163b4)

Release Notes:

- N/A