If you check some docs, you'll find the FACT that:
Accounts have a max size of 10MB (10 Mega Bytes)
PDA accounts have a max size of 10KB (10 Kilo Bytes)
Sounds weird, since PDAs are no different than any other account in storage...
So, you test it. And you find docs are once again WRONG and misleading.
Install Anchor and everything you need.
Set up your Solana environment with a keypair and all.
Run anchor test
and don't trust the docs.