MacrobenchmarkSample: fix small typo in clear data utility function

Author: nift4

MacrobenchmarkSample/macrobenchmark/src/main/kotlin/com/example/macrobenchmark/baselineprofile/Common.kt

@@ -27,7 +27,7 @@ const val TARGET_PACKAGE = "com.example.macrobenchmark.target"
  * including the package name of the app under test.
  */
 fun UiDevice.clearData(scope: MacrobenchmarkScope) {
-    val command = "pm clear $scope.packageName"
+    val command = "pm clear ${scope.packageName}"
     val output = executeShellCommand(command)
 //    Assert.assertEquals("Success", output)
 }