Fixing HTML in check instructions strangerstudios#3293

Instructions for check payments would save with <p> tags wrapping everything and show it in the admin textarea box after saving

classes/gateways/class.pmprogateway_check.php

@@ -116,7 +116,7 @@ static function pmpro_payment_option_fields($values, $gateway)
 				<label for="instructions"><?php esc_html_e('Instructions', 'paid-memberships-pro' );?></label>
 			</th>
 			<td>
-				<textarea id="instructions" name="instructions" rows="3" cols="50" class="large-text"><?php echo wp_kses_post( wpautop(  wp_unslash( $values['instructions'] ) ) ); ?></textarea>
+				<textarea id="instructions" name="instructions" rows="3" cols="50" class="large-text"><?php echo esc_textarea( $values['instructions'] ); ?></textarea>
 				<p class="description"><?php echo esc_html( sprintf( __( 'Instructions for members to follow to complete their purchase when paying with %s. Shown on the membership checkout, confirmation, and order pages.', 'paid-memberships-pro' ), $check_gateway_label ) );?></p>
 			</td>
 		</tr>