message: fix java exclusion
diff: sonar.projectKey=peercoin_peercoin
  sonar.organization=peercoin
  -sonar.exclusions=src/qt/android/**
  +sonar.exclusions=src/secp256k1/src/java/**
  # This is the name and version displayed in the SonarCloud UI.
  sonar.projectName=peercoin
  