Update main.py

Author: Jason2866

builder/main.py

@@ -414,7 +414,7 @@ def switch_off_ldf():
 # Initialize board configuration and MCU settings
 board = env.BoardConfig()
 mcu = board.get("build.mcu", "esp32")
-is_xtensa = mcu in ("esp32","esp32s2","esp32s3")
+is_xtensa = mcu in ("esp32", "esp32s2", "esp32s3")
 toolchain_arch = "xtensa-%s" % mcu
 filesystem = board.get("build.filesystem", "littlefs")