Get token from input in doc

packages/github/README.md

@@ -8,11 +8,12 @@ Returns an [Octokit SDK] client. See https://octokit.github.io/rest.js for the A
 
 ```
 const github = require('@actions/github');
+const core = require('@actions/core');
 
 // This should be a token with access to your repository scoped in as a secret.
-const myToken = process.env.GITHUB_TOKEN
+const myToken = core.getInput('myToken');
 
-const octokit = new github.GitHub(myToken)
+const octokit = new github.GitHub(myToken);
 
 const pulls = await octokit.pulls.get({
     owner: 'octokit',
@@ -21,27 +22,27 @@ const pulls = await octokit.pulls.get({
     mediaType: {
       format: 'diff'
     }
-})
+});
 
-console.log(pulls)
+console.log(pulls);
 ```
 
 You can also make GraphQL requests:
 
 ```
-const result = await octokit.graphql(query, variables)
+const result = await octokit.graphql(query, variables);
 ```
 
 Finally, you can get the context of the current action:
 
 ```
 const github = require('@actions/github');
 
-const context = github.context
+const context = github.context;
 
 const newIssue = await octokit.issues.create({
   ...context.repo,
   title: 'New issue!',
   body: 'Hello Universe!'
-})
-```
+});
+```