Link keypair to keypair management page

Managing account page contains information to create/manage a keypair.

Author: fabricwave

docs/for_users/pchain_client_cli/creating_transaction.md

@@ -144,7 +144,7 @@ Example:
     ```
 
 ### Submit Transaction to ParallelChain
-After preparing the transaction json file, you can now submit the transaction with keypair.
+After preparing the transaction json file, you can now submit the transaction with [keypair](../../for_users/pchain_client_cli/managing_account.md/).
 
 !!! Note
     Executing transactions may require paying for gas fees. If you are testing transactions on Parallelchain Testnet, you can get free testnet tokens from the [Faucet Service](../../fundamentals/networks.md#faucet-service) to pay for the gas fees.