Hi there 👋

I was playing with the **TelegramOperator** and stumbled upon a bug with the `text` field. It is supposed to be a template field but in reality the instance of the **TelegramOperator** does not have this attribute thus every time I try to execute code I get the error:

> AttributeError: 'TelegramOperator' object has no attribute 'text'

```python
TelegramOperator(
        task_id='send_message_telegram',
        telegram_conn_id='telegram_conn_id',
        text='Hello from Airflow!'
    )
```
airflow/providers/telegram/operators/telegram.py
#
#
#
"""Operator for Telegram"""
from typing import Optional
from airflow.exceptions import AirflowException
from airflow.models import BaseOperator
from airflow.providers.telegram.hooks.telegram import TelegramHook
from airflow.utils.decorators import apply_defaults
class TelegramOperator(BaseOperator):