[es8311] Remove MIN and MAX from mic_gain documentation

These are sentinel values for enum bounds and should not be used as
actual configuration values.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: swoboda1337

content/components/audio_dac/es8311.md

@@ -27,7 +27,7 @@ audio_dac:
 - **sample_rate** (*Optional*, positive integer): I2S sample rate. Defaults to `16000`.
 - **use_mclk** (*Optional*, bool): Use the MCLK signal to control the clock. Defaults to `True`.
 - **use_microphone** (*Optional*, bool): Configure the codec's ADC to use PDM microphone input instead of analog. Defaults to False.
-- **mic_gain** (*Optional*, enum): The gain applied to the ADC microphones. One of `MIN`, `0DB`, `6DB`, `12DB`, `18DB`, `24DB`, `30DB`, `36DB`, `42DB`, or `MAX`. Defaults to `42DB`.
+- **mic_gain** (*Optional*, enum): The gain applied to the ADC microphones. One of `0DB`, `6DB`, `12DB`, `18DB`, `24DB`, `30DB`, `36DB`, `42DB`. Defaults to `42DB`.
 - **address** (*Optional*, int): The I²C address of the driver. Defaults to `0x18`.
 - **i2c_id** (*Optional*): The ID of the [I²C bus](/components/i2c) the ES8311 is connected to.
 - All other options from [Audio DAC](/components/audio_dac#config-audio_dac).