fix typo for type in custom column

vue-theme/functions.php

     return $columns;
 }
 // Add the data to the custom columns for PUBLICATION:
-add_action( 'manage_guide_posts_custom_column' , 'custom_publication_column', 10, 2 );
+add_action( 'manage_publication_posts_custom_column' , 'custom_publication_column', 10, 2 );
 function custom_publication_column( $column, $post_id ) {
     switch ( $column ) {
         case 'material' :