Update UseSecurityFeature.md file to use correct flash_format for generating esp_secure_cert partition
Description
The cust_flash format has been deprecated by the http://github.com/espressif/esp_secure_cert_mgr component.
Updating the document to use cust_flash_tlv format for storing the PKI data instead of cust_flash.
Test Steps
Currently if the user follows the steps given to use cust_flash format then they observe a failure with the default configurations for esp_secure_cert_mgr component.
Checklist:
[x] I have tested my changes. No regression in existing tests.
[] I have modified and/or added unit-tests to cover the code changes in this Pull Request. (No unit-test required)
Update
UseSecurityFeature.mdfile to use correct flash_format for generating esp_secure_cert partitionDescription
Test Steps
Currently if the user follows the steps given to use cust_flash format then they observe a failure with the default configurations for esp_secure_cert_mgr component.
Checklist:
Related Issue
https://github.com/espressif/esp-idf/issues/14300
By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.