typo: Encrypt and Decrypt AI -> Encrypt and Decrypt API

**URL of the docs page**
https://docs.dapr.io/developing-applications/building-blocks/cryptography/cryptography-overview

**How is it currently worded?**
Encrypt and Decrypt AI

**How should it be worded?**
Encrypt and Decrypt API

**Screenshots**

**Additional context**

Open the documentation page at https://docs.dapr.io/developing-applications/building-blocks/cryptography/cryptography-overview and locate the heading or text containing “Encrypt and Decrypt AI.” Change “AI” to “API,” then verify the rendered page shows the corrected wording.

Written by the indexing model from the issue text.