docs(generator): update latest generator documentation (#2903)

pages/docs/tools/generator/installation-guide.md

@@ -9,8 +9,8 @@ You can use the generator library to generate whatever you want in your event-dr
 
 ## Prerequisites
 Before you install and use the AsyncAPI CLI and the generator library, ensure you meet the prerequisites below, then [install the CLI](#installation).
-1. Node.js v12.16 and higher
-2. Npm v6.13.7 and higher
+1. Node.js v18.12.0 and higher
+2. Npm v8.19.0 and higher
 
 To verify the versions of Node and Npm you have, run the following command on your terminal:
 ```

pages/docs/tools/generator/using-private-template.md

@@ -2,14 +2,26 @@
 title: "Using private templates"
 weight: 180
 ---
-Generator allows fetching the template from private repositories like Verdaccio, Nexus, npm, etc.
+Generator allows fetching the template from private repositories like Verdaccio, Nexus, npm, etc.   
+By default, the generator fetches the template from the public npm registry configured in the npm configuration.   
+To fetch the template from a private registry, you need to provide the registry URL and authentication details in the .npmrc. For more information [read the docs](https://docs.npmjs.com/cli/v9/configuring-npm/npmrc).   
+However, you can override the default behavior by providing the registry URL and authentication details as arguments of the commandline.
 
 
-## Private registry options:
+## Private registry using .npmrc:
+```bash
+npm config set registry http://verdaccio:4873
+npm config set //verdaccio:4873/:_auth=$(echo -n 'username:password' | base64)
+```
+* **npm config set registry** : Provide the registry URL that points to the registry URL.
+* **npm config set _auth** : Provide the base64 encoded value that represents the username and password for basic auth.
+* **npm config set _authToken** : Provide the access token generated by the registry.
+
+## Private registry overriding arguments:
 
 * **registry.url**: The URL of the registry where the private template is located. Defaults to `registry.npmjs.org`.
 * **registry.auth**: An optional parameter to pass the npm registry username and password encoded with base64, formatted as `username:password`. For example, if the username and password are `admin` and `nimda`, you need to encode them with the base64 value like `admin:nimda` which results in `YWRtaW46bmltZGE=`.
-**registry.token**: An optional parameter to pass to the npm registry authentication token. To get the token, you can first authenticate with the registry using `npm login` and then grab the generated token from the `.npmrc` file.
+* **registry.token**: An optional parameter to pass to the npm registry authentication token. To get the token, you can first authenticate with the registry using `npm login` and then grab the generated token from the `.npmrc` file.
 
 ## Pulling private template using library:
 
@@ -26,4 +38,4 @@ const generator = new Generator('@asyncapi/html-template', 'output',
         }
       });
 ```
-Assuming you host `@asyncapi/html-template` in a private package registry like Verdaccio. To pull this template, you need to provide `registry.url` option that points to the registry URL and `registry.auth` as a base64 encoded value that represents the username and password. Instead of username and password, you can also pass `registry.token`.
+Assuming you host `@asyncapi/html-template` in a private package registry like Verdaccio. To pull this template, you need to provide `registry.url` option that points to the registry URL and `registry.auth` as a base64 encoded value that represents the username and password. Instead of username and password, you can also pass `registry.token`.