Correct default number of bcrypt hash rounds in .1 man page (#13930)

changelog.d/13930.doc

@@ -0,0 +1 @@
+Update the man page for the `hash_password` script to correct the default number of bcrypt rounds performed.

debian/hash_password.1

@@ -10,7 +10,7 @@
 .P
 \fBhash_password\fR takes a password as an parameter either on the command line or the \fBSTDIN\fR if not supplied\.
 .P
-It accepts an YAML file which can be used to specify parameters like the number of rounds for bcrypt and password_config section having the pepper value used for the hashing\. By default \fBbcrypt_rounds\fR is set to \fB10\fR\.
+It accepts an YAML file which can be used to specify parameters like the number of rounds for bcrypt and password_config section having the pepper value used for the hashing\. By default \fBbcrypt_rounds\fR is set to \fB12\fR\.
 .P
 The hashed password is written on the \fBSTDOUT\fR\.
 .SH "FILES"