Changing "What are you looking for ?" text by overriding sportexx_navbar_right_search function

functions.php

<?php

function sportexx_navbar_right_search() {
    ?>
	<form role="search" class="form-search clearfix" action="<?php echo esc_url( home_url( '/'  ) ); ?>">
		<div class="input-group input-search-group">
			<label class="sr-only" for="search-field"><?php _e( 'Type your Search', 'sportexx' ); ?></label>
			<input id="search-field" value="<?php echo get_search_query(); ?>" name="s" type="text" class="input-search form-control" placeholder="<?php echo __( 'Your text ?', 'sportexx' ); ?>">
			<span class="input-group-btn">
				<button class="btn btn-search" type="submit"><i class="fa fa-search search-icon"></i><span class="sr-only"><?php echo __( 'Search', 'sportexx' ); ?></span></button>
			</span>
			<input type="hidden" name="post_type" value="product" />
		</div><!-- /input-group -->
	</form>
	<?php
}