fix the import statement in the Usage section (#4)

Author: gracefullight

README-CN.md

@@ -51,7 +51,7 @@ yarn add @originjs/crypto-js-wasm
 在使用各算法前需调用一次对应的`loadWasm()`，或调用`loadAllWasm()`以加载所有算法的WebAssembly文件。
 
 ```javascript
-import CryptoJSW from 'crypto-js-wasm';
+import CryptoJSW from '@originjs/crypto-js-wasm';
 
 // (可选) 加载所有 wasm 文件
 await CryptoJSW.loadAllWasm();

README.md

@@ -51,7 +51,7 @@ yarn add @originjs/crypto-js-wasm
 Note that the async function `loadWasm()` should be called once (and once only!) for each algorithm that will be used, unless `loadAllWasm()` is called at the very beginning.
 
 ```javascript
-import CryptoJSW from 'crypto-js-wasm';
+import CryptoJSW from '@originjs/crypto-js-wasm';
 
 // (Optional) load all wasm files
 await CryptoJSW.loadAllWasm();