improve description

Author: 0xlukem

.chain-interactions/send-transactions/calculate-transaction-fees.md

@@ -1,6 +1,6 @@
 ---
 title: Calculate Transaction Fees
-description: Learn how to calculate transaction fees for transfers between accounts using Polkadot-API, Polkadot.js API, and the Polkadot.js Apps UI.
+description: Learn how to calculate transaction fees on Polkadot using Polkadot-API, Polkadot.js API, and the Apps UI to estimate transfer costs effectively.
 categories: Basics, Transactions, Developer Tools
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