Update common-crsf-telemetry.rst

Update info on ELRS telemetry, as this has not been accurate for several years.

common/source/docs/common-crsf-telemetry.rst

@@ -4,9 +4,9 @@
 TBS Crossfire Telemetry
 =======================
 
-.. note:: ELRS (ExpressLRS) RC systems use the Crossfire protocol and are connected in a similar manner. However, it does not provide bi-directional telemetry like Crossfire.
+.. note:: ELRS (ExpressLRS) RC systems use the CRSF protocol and are connected in a similar manner. ELRS receivers can also be used in Mavlink mode to provide both bidirectional Mavlink telemetry and RC control over a single TX-RX pair. Details `here <https://www.expresslrs.org/software/mavlink/>`_.
 
-TBS CRSF Receivers incorporate telemetry along with RC control information in their interface to ArduPilot. ArduPilot supports native CRSF telemetry and extensions to it that allow using the :Ref:`common-frsky-yaapu`. See :ref:`common-tbs-rc` for connection and setup information.
+TBS Crossfire Receivers incorporate telemetry along with RC control information in their interface to ArduPilot. ArduPilot supports native CRSF telemetry and extensions to it that allow using the :Ref:`common-frsky-yaapu`. See :ref:`common-tbs-rc` for connection and setup information.
 
 OpenTx will discover the native CRSF Telemetry sensors (but a limited number, use passthru option below for more displayed information using Yaapu Telemetry script), which then can be displayed on `OpenTX <https://www.open-tx.org/>`_ telemetry screens or repeated from the CRSF TX module's WIFI to MAVLink Ground Control Stations: