add disabled formcontrol code example

Example: disable control with formbuilder

this.userProfileForm = this.formBuilder.group({
  // ...
  password: [{
    value: null,
    disabled: !this.isResetPassword
  }],
  newPassword: [{
    value: null,
    disabled: !this.isResetPassword
  }],
  reTypePassword: [{
    value: null,
    disabled: !this.isResetPassword
  }]
});