doc/release-process: Correct m_assumed_*_size to GB

doc/release-process.md

@@ -310,13 +310,13 @@ cat "$VERSION"/*/all.SHA256SUMS.asc > SHA256SUMS.asc
 Both variables are used as a guideline for how much space the user needs on their drive in total, not just strictly for the blockchain.
 Note that all values should be taken from a **fully synced** node and have an overhead of 5-10% added on top of its base value.
 
-To calculate `m_assumed_blockchain_size`, take the size in GiB of these directories:
+To calculate `m_assumed_blockchain_size`, take the size in GB of these directories:
 - For `mainnet` -> the data directory, excluding the `/testnet3`, `/testnet4`, `/signet`, and `/regtest` directories and any overly large files, e.g. a huge `debug.log`
 - For `testnet` -> `/testnet3`
 - For `testnet4` -> `/testnet4`
 - For `signet` -> `/signet`
 
-To calculate `m_assumed_chain_state_size`, take the size in GiB of these directories:
+To calculate `m_assumed_chain_state_size`, take the size in GB of these directories:
 - For `mainnet` -> `/chainstate`
 - For `testnet` -> `/testnet3/chainstate`
 - For `testnet4` -> `/testnet4/chainstate`