Add better description to advace script

Add better description to the advance script.
Add the `venv` folder to be ignore.
Add the ussage of the script for the documentation.

Author: yeyeto2788

.gitignore

@@ -13,3 +13,4 @@ bundles
 .eggs
 dist
 **/*.egg-info
+venv

docs/examples.rst

@@ -6,3 +6,13 @@ Ensure your device works with this simple test.
 .. literalinclude:: ../examples/dht_simpletest.py
     :caption: examples/dht_simpletest.py
     :linenos:
+
+
+Time calibration advance test
+------------
+
+Check what is the best time your sensor.
+
+.. literalinclude:: ../examples/dht_time_calibration_advance.py
+    :caption: examples/dht_time_calibration_advance.py
+    :linenos:

examples/dht_time_calibration.py renamed to examples/dht_time_calibration_advance.py

@@ -1,13 +1,23 @@
 # SPDX-FileCopyrightText: 2021 yeyeto2788 for Adafruit Industries
 # SPDX-License-Identifier: MIT
 
+"""
+This script let's you check the best timing for you sensor as other people have face timing issues
+as seen on issue https://github.com/adafruit/Adafruit_CircuitPython_DHT/issues/66.
+
+By changing the variables values below you will be able to check the best timing for you sensor,
+take into account that by most datasheets the timing for the sensor are 0.001 DHT22 and
+0.018 for DHT11 which are the default values of the library.
+"""
+
 import json
 import time
 
 import board
 
 import adafruit_dht
 
+# Change the pin used below
 pin_to_use = "PG6"
 
 # Maximum number of tries per timing
@@ -41,10 +51,10 @@
     # Instantiate the DHT11 object.
     dhtDevice = adafruit_dht.DHT11(pin=getattr(board, pin_to_use))
     # Change the default wait time for triggering the read.
-    # pylint: disable=W0212
+    # pylint: disable=protected-access
     dhtDevice._trig_wait = milliseconds
 
-    # pylint: disable=W0212
+    # pylint: disable=protected-access
     print(f"Using 'trig_wait' of {dhtDevice._trig_wait}")
     # Reset the read count for next loop
     reads_count = 0