Docs: Add a @property-read notation for the read-only WP_Term::$data property.

See [35269], #34348 and #41017.


git-svn-id: https://develop.svn.wordpress.org/trunk@40973 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/class-wp-term.php

@@ -11,6 +11,8 @@
  * Core class used to implement the WP_Term object.
  *
  * @since 4.4.0
+ *
+ * @property-read object $data Sanitized term data.
  */
 final class WP_Term {