Update develop/toolkit/integrations/transaction-construction.md

Co-authored-by: Taylor Lucero <[email protected]>

Author: brunopgalvao

develop/toolkit/integrations/transaction-construction.md

@@ -19,7 +19,7 @@ Polkadot has some basic transaction information that is common to all transactio
 
 - **Address**: The [SS58-encoded address](/polkadot-protocol/glossary/#ss58-address-format){target=\_blank} of the sending account.
 - **Block hash**: The hash of the [checkpoint](/polkadot-protocol/parachain-basics/blocks-transactions-fees/transactions/#transaction-mortality){target=\_blank} block.
-- **Block Number**: The number of the checkpoint block.
+- **Block number**: The number of the checkpoint block.
 - **Genesis hash**: The genesis hash of the chain.
 - **Metadata**: The [SCALE-encoded metadata](polkadot-protocol/parachain-basics/data-encoding/){target=\_blank} for the runtime when submitted.
 - **Nonce**: The nonce for this transaction.