fix: small typo (#5070)

## Problem solved

Short description of the bug fixed or feature added

<!-- start pr-codex -->

---

## PR-Codex overview
This PR focuses on correcting the links in the `page.mdx` file related to modular contracts in the portal documentation.

### Detailed summary
- Fixed the link for `Create Core Contract` from `create-core-contact` to `create-core-contract`.
- Fixed the link for `Create Module Contract` from `create-module-contact` to `create-module-contract`.
- Removed the link for `Deploy Modular Contract`.

> ✨ Ask PR-Codex anything about this PR by commenting with `/codex {your question}`

<!-- end pr-codex -->

Author: GWSzeto

apps/portal/src/app/contracts/modular-contracts/get-started/page.mdx

@@ -26,8 +26,8 @@ If you are new to Solidity, we recommend starting with the [Solidity docs](https
 
 Create Modular Contract
 
-- [Create Core Contract](https://portal.thirdweb.com/contracts/modular-contracts/get-started/create-core-contact)
-- [Create Module Contract](https://portal.thirdweb.com/contracts/modular-contracts/get-started/create-module-contact)
+- [Create Core Contract](https://portal.thirdweb.com/contracts/modular-contracts/get-started/create-core-contract)
+- [Create Module Contract](https://portal.thirdweb.com/contracts/modular-contracts/get-started/create-module-contract)
 - [Deploy Modular Contract](https://portal.thirdweb.com/contracts/modular-contracts/get-started/deploy-modular-contract)
 
 Interact with the Modular Contract