doc(php): fix install script

ISAAC-XXYYZZ · ISAAC-XXYYZZ · commit b955d59d6a02 · 2025-05-27T16:59:48.000+08:00
diff --git a/README.md b/README.md
@@ -20,7 +20,7 @@ For an overview of the project and SDKs in other languages, refer to the [Main R
 Install the SDK using `composer`:
 
 ```bash
-composer require kucoin/kucoin-universal-sdk
+composer require kucoin/kucoin-universal-sdk=0.1.0-alpha
 ```
 
 ## 📖 Getting Started
