Add missing Idle action description.

Author: lygris

content/components/cc1101.md

@@ -72,6 +72,7 @@ This component provides actions to control the radio state, primarily used for c
 - **cc1101.begin\_tx**: Wakes the radio and forces it into TX mode. This **must** be called before `remote_transmitter` starts sending data.
 - **cc1101.end\_tx**: Puts the radio back into RX mode and resets the pin configuration to safe defaults.
 - **cc1101.reset**: Resets the CC1101 chip and re-applies configuration.
+- **cc1101.set_idle**: Puts the radio into idle state.
 
 ### Example Transmit Button