fixed one grammar per acrolinx

Author: JimacoMS4

articles/iot-dps/how-to-legacy-device-symm-key.md

@@ -17,7 +17,7 @@ This tutorial shows how to securely provision multiple simulated symmetric key d
 
 Some devices may not have a certificate, TPM, or any other security feature that can be used to securely identify the device. For such devices, the Azure IoT Hub Device Provisioning Service (DPS) includes [symmetric key attestation](concepts-symmetric-key-attestation.md). Symmetric key attestation can be used to identify a device based on unique information like the MAC address or a serial number.
 
-If you can easily install a [hardware security module (HSM)](concepts-service.md#hardware-security-module) and a certificate, then that may be a better approach for identifying and provisioning your devices. Using an HSM will allow you to bypass updating the code deployed to all your devices, and you would'nt have a secret key embedded in your device images. This tutorial assumes that neither an HSM nor a certificate is a viable option. However, it's assumed that you do have some method of updating device code to use the Device Provisioning Service to provision these devices.
+If you can easily install a [hardware security module (HSM)](concepts-service.md#hardware-security-module) and a certificate, then that may be a better approach for identifying and provisioning your devices. Using an HSM will allow you to bypass updating the code deployed to all your devices, and you wouldn't have a secret key embedded in your device images. This tutorial assumes that neither an HSM nor a certificate is a viable option. However, it's assumed that you do have some method of updating device code to use the Device Provisioning Service to provision these devices.
 
 This tutorial also assumes that the device update takes place in a secure environment to prevent unauthorized access to the master group key or the derived device key.