docs: fix flash_encryption key generation command

Signed-off-by: Mahavir Jain <mahavir@espressif.com>

diff --git a/docs/en/security/flash-encryption.rst b/docs/en/security/flash-encryption.rst
index f44fa18bb5f0fdb82bee970ff8f979ec060710f6..584a6df252cd3b76a7b78fa3b208a01744f37d07 100644 (file)
--- a/docs/en/security/flash-encryption.rst
+++ b/docs/en/security/flash-encryption.rst
@@ -196,7 +196,7 @@ Flash encryption keys are 32 bytes of random data. You can generate a random key
 
 Alternatively, if you're using :doc:`secure boot <secure-boot>` and have a secure boot signing key then you can generate a deterministic SHA-256 digest of the secure boot private signing key and use this as the flash encryption key::
 
-  espsecure.py digest_private-key --keyfile secure_boot_signing_key.pem my_flash_encryption_key.bin
+  espsecure.py digest_private_key --keyfile secure_boot_signing_key.pem my_flash_encryption_key.bin
 
 (The same 32 bytes is used as the secure boot digest key if you enable :ref:`reflashable mode<secure-boot-reflashable>` for secure boot.)