fixing some hungarian week day letters

    <string name="monday_letter">H</string>

    <string name="tuesday_letter">K</string>

    <string name="wednesday_letter">Sz</string>

    <string name="thursday_letter">K</string>

    <string name="thursday_letter">Cs</string>

    <string name="friday_letter">P</string>

    <string name="saturday_letter">V</string>

    <string name="saturday_letter">Sz</string>

    <string name="sunday_letter">V</string>

    <string name="monday_short">Hé</string>