change credit link, powered by in wordpress theme

look in theme folder "inc" and locate the file
named "template-tags".
there is a line like this:

// Display Footer Text
add_action( 'smartline_footer_text', 'smartline_display_footer_text' );

function smartline_display_footer_text() { ?>


<span class="credit-link">
<?php printf(__( 'Powered by %1$s %2$s.', 'smartline-lite' ),
sprintf( '<a href="http://mh.edu.ro/" title="Copyright © 2014 Inspectoratul Scolar">%s</a>', __( 'Inspectoratul Scolar', 'smartline-lite' ) ),
sprintf( '<a href="http://http://mh.edu.ro/" title="Judetean Mehedinti">%s</a>', __( 'Judetean Mehedinti', 'smartline-lite' ) )
); ?>
</span>