message: Capitalise MAVLink, and improve text
diff: @@ -115,7 +115,7 @@ public:
  * @brief Get vector of device UUIDs.
  *
  * This returns a vector of the UUIDs of all devices that have been discovered.
  - * Devices without UUIDs will just use the mavlink system IDs ranging from (0..255).
  + * If a device doesn't have a UUID then DroneCore will instead use its MAVLink system ID (range: 0..255).
  *
  * @return A reference to the vector containing the UUIDs.
  */
  @@ -144,7 +144,7 @@ public:
  /**
  * @brief Callback type for discover and timeout notifications.
  *
  - * @param uuid UUID of device (or mavlink system ID if UUID is not supported by the device)
  + * @param uuid UUID of device (or MAVLink system ID for devices that don't have a UUID).
  */
  typedef std::function<void(uint64_t uuid)> event_callback_t;
  