tests/run-natmodtests: Update for s/_/-/ in executable names.
@@ -14,7 +14,7 @@ import pyboard
# Paths for host executables
CPYTHON3 = os.getenv('MICROPY_CPYTHON3', 'python3')
-MICROPYTHON = os.getenv('MICROPY_MICROPYTHON', '../ports/unix/pycopy_coverage')
+MICROPYTHON = os.getenv('MICROPY_MICROPYTHON', '../ports/unix/pycopy-coverage')
NATMOD_EXAMPLE_DIR = '../examples/natmod/'
