Updating documentation slightly regarding Custom Mailer

Author: bbottema

modules/core-module/src/main/java/org/simplejavamail/api/mailer/CustomMailer.java

@@ -8,16 +8,17 @@
 
 /**
  * By default, Simple Java Mail handles the ultimate connection and sending of emails. However, it is possible to replace this last step
- * by a custom implementation. Note this is not meant to 'override' the default behavior, but to provide a custom implementation for
+ * with a custom implementation. Note this is not meant to 'override' the default behavior, but to provide a custom implementation for
  * specific use cases (for example sending using MailChimp or SendGrid, or logging to your own database).
  * <p>
- * The benefit of this is that Simple Java Mail acts as an accelarator, providing thread pool, applying email content-validation, address validations,
+ * The benefit of this is that Simple Java Mail acts as an accelerator, providing thread pool, applying email content-validation, address validations,
  * configuring a {@code Session} instance, producing a {@code MimeMessage}, all with full S/MIME, DKIM support and everything else.
  * <p>
- * <strong>Note:</strong> in this mode, proxy support is turned off assuming it is handled by the custom mailer as well.
+ * <strong>Note:</strong> in this mode, proxy support is turned off assuming it is handled by the custom mailer as well.<br>
  * <strong>Note:</strong> in this mode, the batch-module (SMTP cluster(s) / smtp connection pooling) won't be used either.
  *
  * @see MailerGenericBuilder#withCustomMailer(CustomMailer)
+ * @see <a href="https://simplejavamail.org/features.html#section-custom-mailer">Plug your own sending logic with a Custom Mailer</a>
  */
 public interface CustomMailer {
 	void testConnection(@NotNull OperationalConfig operationalConfig, @NotNull Session session);