Update index.rst (#757)

Removed duplicate "if no value" - line 496
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David Martin 2020-09-15 16:55:07 +01:00 committed by GitHub
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@ -493,7 +493,7 @@ advanced stuff (see the full API Reference for more info).
ESP_LOGI("main", "Value of my sensor: %f", id(my_sensor).state);
- ``raw_state``: Retrieve the current value of the sensor that has not passed through any filters
Is ``NAN`` if no value if no value has been pushed by the sensor itself yet.
Is ``NAN`` if no value has been pushed by the sensor itself yet.
.. code-block:: cpp