README typo (commaai#1788)

README.md

@@ -33,7 +33,7 @@ These are the [CI regression tests](https://github.com/commaai/panda/actions) we
 * The [safety logic](https://github.com/commaai/panda/tree/master/board/safety) is tested and verified by [unit tests](https://github.com/commaai/panda/tree/master/tests/safety) for each supported car variant.
 to ensure that the behavior remains unchanged.
 * A hardware-in-the-loop test verifies panda's functionalities on all active panda variants, including:
-  * additional afety model checks
+  * additional safety model checks
   * compiling and flashing the bootstub and app code
   * receiving, sending, and forwarding CAN messages on all buses
   * CAN loopback and latency tests through USB and SPI