docs: improve description (#4)

Uses clearer terms, based on pallet contracts description.

README.md

@@ -1,6 +1,6 @@
 # Contracts Parachain Template
 
-A new [Cumulus](https://github.com/paritytech/polkadot-sdk/tree/master/cumulus)-based Substrate node, configured to support Wasm-based contracts.
+A new [Cumulus](https://github.com/paritytech/polkadot-sdk/tree/master/cumulus)-based Substrate node, configured to support WebAssembly smart contracts.
 
 This project is a fork of the [Base Parachain Template](https://github.com/r0gue-io/base-parachain). 
 
@@ -14,4 +14,4 @@ It is used to generate parachains using [Pop CLI](https://github.com/r0gue-io/po
 
 👉 Learn more about parachains [here](https://wiki.polkadot.network/docs/learn-parachains).
 
-🧙 Learn about how to build using this template [here](https://docs.substrate.io/tutorials/).
+🧙 Learn about how to build using this template [here](https://docs.substrate.io/tutorials/).