Fix screenshots

Author: hannesa2

MPChartExample/src/androidTest/java/com/xxmassdeveloper/mpchartexample/StartTest.kt

@@ -65,7 +65,7 @@ class StartTest {
                 openActionBarOverflowOrOptionsMenu(getInstrumentation().targetContext)
                 Thread.sleep(100)
                 takeScreenshot()
-                    .writeToTestStorage("${javaClass.simpleName}_${nameRule.methodName}-${index}-${it.simpleName} menu")
+                    .writeToTestStorage("${javaClass.simpleName}_${nameRule.methodName}-${index}-${it.simpleName}-menu")
                 Espresso.pressBack()
                 Thread.sleep(100)
                 Espresso.pressBack()