fix: loadPackage function name

Signed-off-by: peefy <[email protected]>

Author: Peefy

i18n/zh-CN/docusaurus-plugin-content-blog/2024-04-17-newsletter/index.md

@@ -103,7 +103,7 @@ function main() {
 main();
 ```
 
-+ `execProgram`
++ `loadPackage`
 
 ```ts
 import { listVariables, ListVariablesArgs } from "kcl-lib";