test(samples): add new samples

Author: kotlin-samples-pusher-bot

src/test/resources/test-compile-data/jvm/kotlin-web-site/booleans/12bb120f56ea8aee70a72c46b1a1383f.1.kt

@@ -3,9 +3,14 @@ fun main() {
     val myTrue: Boolean = true
     val myFalse: Boolean = false
     val boolNull: Boolean? = null
-    
+
     println(myTrue || myFalse)
+    // true
     println(myTrue && myFalse)
+    // false
     println(!myTrue)
+    // false
+    println(boolNull)
+    // null
 //sampleEnd
 }