Fix an error in the integration test with declaration redeclaration

dokka-integration-tests/gradle/projects/it-multiplatform-0/src/commonMain/kotlin/it/mpp0/ExpectedClass.kt

@@ -3,3 +3,7 @@ package it.mpp0
 expect class ExpectedClass {
     val platform: String
 }
+
+expect class ExpectedClass2 {
+    val platform: String
+}

dokka-integration-tests/gradle/projects/it-multiplatform-0/src/desktopMain/kotlin/it/mpp0/ExpectedClass2.kt

@@ -0,0 +1,5 @@
+package it.mpp0
+
+actual class ExpectedClass2 {
+    actual val platform: String = "desktop"
+}

dokka-integration-tests/gradle/projects/it-multiplatform-0/src/jsMain/kotlin/it/mpp0/ExpectedClass.kt

@@ -3,3 +3,7 @@ package it.mpp0
 actual class ExpectedClass {
     actual val platform: String = "js"
 }
+
+actual class ExpectedClass2 {
+    actual val platform: String = "js"
+}

dokka-integration-tests/gradle/projects/it-multiplatform-0/src/jvmMain/kotlin/it/mpp0/ExpectedClass.kt

@@ -9,3 +9,7 @@ actual class ExpectedClass {
     fun jvmOnlyFunction() = Unit
 
 }
+
+actual class ExpectedClass2 {
+    actual val platform: String = "jvm"
+}

dokka-integration-tests/gradle/projects/it-multiplatform-0/src/linuxMain/kotlin/it/mpp0/CPointerExtension.kt

@@ -6,6 +6,6 @@ import kotlinx.cinterop.CPointer
 /**
  * Will print the raw value
  */
-fun CPointer<CPointed>.customExtension() {
+fun CPointer<CPointed>.customExtension2() {
     println(this.rawValue)
 }