Update code examples in building-a-login-with-github-button-with-a-github-app.md

[arthurgubaidullin]

Remove unnecessary body from http get request

Why:

Sending body in a get request is redundant.

What's being changed (if available, include any code snippets, screenshots, or gifs):

I corrected the code examples in sections:

• Add code to generate a user access token
• Full code example

What's fixed:

def user_info(token)
  uri = URI("https://api.github.com/user")

  result = Net::HTTP.start(uri.host, uri.port, use_ssl: true) do |http|
-    body = {"access_token" => token}.to_json

    auth = "Bearer #{token}"
    headers = {"Accept" => "application/json", "Content-Type" => "application/json", "Authorization" => auth}

-   http.send_request("GET", uri.path, body, headers)
+   http.send_request("GET", uri.path, nil, headers)
  end

  parse_response(result)
end

Documentation:

• send_request

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• I have reviewed my changes in staging, available via the View deployment link in this PR's timeline (this link will be available after opening the PR).

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• For content changes, I have completed the self-review checklist.

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The table contains an overview of files in the content directory that have been changed in this pull request. It's provided to make it easy to review your changes on the staging site. Please note that changes to the data directory will not show up in this table.

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Content directory changes

You may find it useful to copy this table into the pull request summary. There you can edit it to share links to important articles or changes and to give a high-level overview of how the changes in your pull request support the overall goals of the pull request.

Source	Preview	Production	What Changed
apps/creating-github-apps/writing-code-for-a-github-app/building-a-login-with-github-button-with-a-github-app.md	fpt ghec ghes@ 3.15 3.14 3.13 3.12 3.11 3.10	fpt ghec ghes@ 3.15 3.14 3.13 3.12 3.11 3.10

---

fpt: Free, Pro, Team
ghec: GitHub Enterprise Cloud
ghes: GitHub Enterprise Server

[nguyenalex836]

@arthurgubaidullin Thanks so much for opening a PR! I'll get this triaged for review ✨