corrected Case-sensitive fault in Naming of ValuedEvents and added "s" everywhere

test-plugins/org.yakindu.sct.test.models/tests/AllTests.sctunit

@@ -17,7 +17,7 @@ testsuite AllTests {
 	StringExpressions, 
 	SyncFork,
 	SyncJoin, 
-	ValuedEvent, 
+	ValuedEvents, 
 	SimpleEvent,
 	STextKeywordsInStatesAndRegions 
 } 

test-plugins/org.yakindu.sct.test.models/tests/ValuedEvent.sctunit

@@ -1,5 +1,5 @@
-testgroup ValuedEvent for statechart ValuedEvents {
-	test valuedEventTest {
+testgroup ValuedEvents for statechart ValuedEvents {
+	test valuedEventsTest {
 		
 		enter