Even though the proper way to repair items is to combine them in a grindstone in 1.14+ you are still able to repair them in your crafting area; the durability that the items end up with once they are combined is the same.
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From https://www.minecraft.net/en-us/article/minecraft-1-14-3-pre-release-1?3:
Item can now be repaired by crafting them together again
99% sure that this behavior was re-added into the game after the Grindstone was added because people wanted it back.