docs: add pre-1.0 notice to README

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Co-Authored-By: Claude <[email protected]>

Author: 0xLeif

README.md

@@ -5,7 +5,7 @@
 [![License](https://img.shields.io/github/license/CorvidLabs/swift-algorand)](https://github.com/CorvidLabs/swift-algorand/blob/main/LICENSE)
 [![Version](https://img.shields.io/github/v/release/CorvidLabs/swift-algorand)](https://github.com/CorvidLabs/swift-algorand/releases)
 
-> **Pre-1.0 Notice**: This SDK is under active development. The API may change between minor versions until 1.0. Not yet audited by a third-party security firm.
+> **Pre-1.0 Notice**: This SDK is under active development. The API may change between minor versions until 1.0.
 
 A modern Swift SDK for the Algorand blockchain. Built with Swift 6 and async/await.