Update EIP-7623: Update EIP7623 to reflect correct invalid cost

Merged by EIP-Bot.

EIPS/eip-7623.md

@@ -60,7 +60,7 @@ tx.gasUsed = {
     )
 ```
 
-Any transaction with a gas limit below `21000 + TOTAL_COST_FLOOR_PER_TOKEN * tokens_in_calldata` is considered invalid. This limitation exists because transactions must cover the floor price of their calldata without relying on the execution of the transaction. There are valid cases where `gasUsed` will be below this floor price, but the floor price needs to be reserved in the transaction gas limit.
+Any transaction with a gas limit below `21000 + TOTAL_COST_FLOOR_PER_TOKEN * tokens_in_calldata` or below it's intrinsic gas cost (take the maximum of these two calculations) is considered invalid. This limitation exists because transactions must cover the floor price of their calldata without relying on the execution of the transaction. There are valid cases where `gasUsed` will be below this floor price, but the floor price needs to be reserved in the transaction gas limit.
 
 ## Rationale