The hyperlinked "Spellcasting" on the class tables for the cleric, druid, paladin, ranger sorcerer, and wizard are all linked incorrectly. Instead of directing to the class's own spellcasting entry, they all instead link to the Bard's feature of that name.
I have noticed some linking errors on the page:
https://www.dndbeyond.com/compendium/rules/phb/classes
The hyperlinked "Spellcasting" on the class tables for the cleric, druid, paladin, ranger sorcerer, and wizard are all linked incorrectly. Instead of directing to the class's own spellcasting entry, they all instead link to the Bard's feature of that name.
Can confirm - nice catch!