diff --git a/requests_html.py b/requests_html.py
index 556bb44..fd3b351 100644
--- a/requests_html.py
+++ b/requests_html.py
@@ -181,7 +181,8 @@ class BaseParser:
 
     @property
     def base_url(self) -> str:
-        """The base URL for the page. Supports the ``<base>`` tag."""
+        """The base URL for the page. Supports the ```<base>`` tag
+        (`learn more <https://www.w3schools.com/tags/tag_base.asp>`_)."""
 
         # Support for <base> tag.
         base = self.find('base', first=True)