[DOC]: Clarification of security document

[BSarmady]

in issue templates there is no tag for documentation, so please add if necessary.

documentation at https://docs.phalcon.io/4.0/en/security mentions

"Getter and setter for the default hash that the component will use. By default the hash is set to CRYPT_DEFAULT (0). The available options are:"

I think it needs clarification that which one of these are used as default

• CRYPT_BLOWFISH_A
• CRYPT_BLOWFISH_X
• CRYPT_BLOWFISH_Y
• CRYPT_MD5
• CRYPT_SHA256
• CRYPT_SHA512
• CRYPT_DEFAULT

Also mentioned

"In the above example, the setWorkFactor() sets the password hashing factor to 12 rounds."

What does it mean? Is it hashing the text 12 times?