Improve KParameter.toString for instance and extension receiver parameter

#KT-17860 Fixed

compiler/testData/codegen/box/reflection/methodsFromAny/parametersToString.kt

@@ -16,12 +16,12 @@ fun baz(name: String) {}
 
 fun box(): String {
     assertEquals(
-            listOf("extension receiver of ${Int::foo}", "parameter #1 s of ${Int::foo}"),
+            listOf("extension receiver parameter of ${Int::foo}", "parameter #1 s of ${Int::foo}"),
             Int::foo.parameters.map(Any::toString)
     )
 
     assertEquals(
-            listOf("instance of ${A::bar}"),
+            listOf("instance parameter of ${A::bar}"),
             A::bar.parameters.map(Any::toString)
     )
 

core/reflection.jvm/src/kotlin/reflect/jvm/internal/ReflectionObjectRenderer.kt

@@ -95,8 +95,8 @@ internal object ReflectionObjectRenderer {
     fun renderParameter(parameter: KParameterImpl): String {
         return buildString {
             when (parameter.kind) {
-                KParameter.Kind.EXTENSION_RECEIVER -> append("extension receiver")
-                KParameter.Kind.INSTANCE -> append("instance")
+                KParameter.Kind.EXTENSION_RECEIVER -> append("extension receiver parameter")
+                KParameter.Kind.INSTANCE -> append("instance parameter")
                 KParameter.Kind.VALUE -> append("parameter #${parameter.index} ${parameter.name}")
             }