`onChainCheck` usage hint references an invalid Gradle flag

[MrLightspeed]

Summary

When the onChainCheck task is run without -PfileToCheck, the CLI suggests ./gradlew -PfileToCheckh=/path/you/want/to/import, which is not a valid Gradle invocation.

Steps to reproduce

1. Checkout master at e0794ee.
2. Ensure Java 17 is available (export JAVA_HOME=$HOME/.jdks/jdk-17.0.13+11 && export PATH=$JAVA_HOME/bin:$PATH).
3. Run ./gradlew onChainCheck without extra parameters.

Actual result

> Task :onChainCheck FAILED
Error: fileToCheck not specified :-)
Please execute like this: ./gradlew -PfileToCheckh=/path/you/want/to/import

The hint uses -PfileToCheckh and omits the task name, so copying it still fails.

Expected result

The usage message should show the proper command, e.g. ./gradlew onChainCheck -PfileToCheck=tokens/<chain>/<address>.json.

Environment

• Commit: e0794ee
• JDK: openjdk version "17.0.13" 2024-10-15 (Temurin-17.0.13+11)
• OS: Ubuntu 22.04 (WSL)

Related PR

• docs: correct onChainCheck usage hint #980 updates OnChainCheck.kt to print a correct usage hint.