Update sponsorship-agreement.php

Add clarifying text.

public_html/wp-content/plugins/wordcamp-docs/templates/sponsorship-agreement.php

@@ -45,7 +45,7 @@ public function form_prefill_select( $data ) {
 					<option value="<?php echo esc_attr( $sponsor->ID ); ?>"><?php echo esc_html( get_the_title( $sponsor ) ); ?></option>
 				<?php endforeach; ?>
 			</select>
-			<span class="description"><?php esc_html_e( 'Sponsorship details will be pre-filled with the data on sponsor post.', 'wordcamporg' ); ?></span>
+			<span class="description"><?php esc_html_e( 'Sponsorship details will be pre-filled with data on the sponsor post.', 'wordcamporg' ); ?></span>
 
 			<label><?php esc_html_e( 'Sponsorship Benefits:', 'wordcamporg' ); ?></label>
 			<textarea name="sponsorship_benefits"><?php echo esc_textarea( $data['sponsorship_benefits'] ?? '' ); ?></textarea>