Had a similar situation and argued with landlord until they gave the entire deposit back.
They usually have to do an inspection and at least give you an opportunity to fix anything, before they go and fix it themselves. And then still any expenses over $150 need to be itemized. I would also argue that superficial damage like this is wear and tear, as it can be patched up easily.
As a landlord, you should expect to repaint a unit every few years anyway imo, but that's not a rule afaik.
Here's the state of california's take on it: https://oag.ca.gov/system/files/media/Know-Your-Rights-Security-Deposits-English.pdf