doc: update README.md

Author: Kagashino

README.md

@@ -11,13 +11,13 @@ This package is available for several languages/platforms:
 To use from JavaScript or TypeScript in Node.js, install using either `npm`:
 
 ```bash
-npm install @tencentcloud-iac/pulumi
+npm install @tencentcloud_iac/pulumi
 ```
 
 or `yarn`:
 
 ```bash
-yarn add @tencentcloud-iac/pulumi
+yarn add @tencentcloud_iac/pulumi
 ```
 
 ### Python
@@ -44,6 +44,8 @@ The following configuration points are available for the `tencentcloud` provider
 - `tencentcloud:secretKey` (environment: `TENCENTCLOUD_SECRET_KEY`) - the API Secret Key for `tencentcloud`
 - `tencentcloud:region` (environment: `TENCENTCLOUD_REGION`) - the region in which to deploy resources
 
+Run `pulumi config set tencentcloud:*` to configure before applying.
+
 ## Reference
 
 For detailed reference documentation, please visit [the Pulumi registry](https://www.pulumi.com/registry/packages/tencentcloud/api-docs/).