Lukijan kuvat / Readers pics : add correct input types to fields

[Palarisk]

All fields are now text fields. Change the type of

• phone number to tel
• Email toemail

See discussion:
https://sanoma.slack.com/archives/C01A2RE8U15/p1701680748887189

Also (this can be simultanously or later):,

• check that the number inserted to tel is at least 6 digits long (currently one digit is enough

• add some basic email validity checker ( eg at least @-symbol and dot something etc)