message: [examples/erc20] Fix idents in build.sh script
diff: # under target/release/wasm32-unknown-unknown/ in the cwd.
  cargo +nightly build --release --target=wasm32-unknown-unknown --verbose
  -wasm-build target enyzme --target-runtime=substrate --final=adder --save-raw=./target/enzyme-deployed.wasm --target wasm32-unknown-unknown
  +wasm-build target erc20_token --target-runtime=substrate --final=erc20_token --save-raw=./target/erc20_token-deployed.wasm --target wasm32-unknown-unknown
  