Fix incorrect test data for wrong KotlinSignature CLI test

Classes from the root package cannot be referenced from a non-root package

compiler/testData/cli/jvm/wrongKotlinSignatureLib/library/ClassWithWrongKotlinSignatures.java

@@ -0,0 +1,15 @@
+package library
+
+import jet.runtime.typeinfo.KotlinSignature;
+
+public class ClassWithWrongKotlinSignatures {
+    @KotlinSignature("fun bar() : String")
+    public static String foo() {
+        throw new UnsupportedOperationException();
+    }
+
+    @KotlinSignature("fun foo() : String")
+    public static String bar() {
+        throw new UnsupportedOperationException();
+    }
+}