Solved,
Just edit this page: ‘entry-summary.php’ in the folder:
wp-content/themes/colormag/template-parts/entry
Replace:
<span><?php echo esc_html( 'Read More' ); ?></span>
by:
<span><?php echo esc_html( 'Lire la suite' ); ?></span>
on line 25 and 47
Enjoy,
