fixes missing '"'

Author: kdschlosser

builder/macOS.py

@@ -68,7 +68,7 @@ def build_commands(_, extra_args, script_dir, lv_cflags, board):
         f'LV_CFLAGS="{lv_cflags}"',
         f'LV_PORT=unix',
         f'USER_C_MODULES="{script_dir}/ext_mod"',
-        f'CFLAGS="-Wno-missing-field-initializers -Wno-unused-function -I"{script_dir}/lib/micropython"'
+        f'CFLAGS="-Wno-missing-field-initializers -Wno-unused-function -I{script_dir}/lib/micropython"'
     ])
     unix_cmd.extend(extra_args)