Fix vote_update event

[BenyFilho]

PR Details

Fixing poll_update event to work in webpack-exodus

Description

Fixing poll_update event to work in webpack-exodus

Related Issue

Motivation and Context

How Has This Been Tested

SENDING THE POLL

const poll = new Poll('Which pet do you prefer?', ['Cat', 'Dog']);
const msgPoll = await client.sendMessage(chatId, poll);

LISTENING THE EVENT

client.on('vote_update', (vote) => {
      console.log(vote);
});

Types of changes

• Dependency change
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My code follows the code style of this project.
• I have updated the documentation accordingly (index.d.ts).