Add SoundEffectVolume & VocalsVolume to SConfig Test (#847)

* Add SoundEffectVolume

* Add VocalsVolume

* Trim trailing whitespace/newlines

Tests/VocaluxeLib/XML/TestFiles/SConfig.xml

@@ -56,6 +56,8 @@
     <BackgroundMusicUseStart>TR_CONFIG_ON</BackgroundMusicUseStart>
     <PreviewMusicVolume>50</PreviewMusicVolume>
     <GameMusicVolume>80</GameMusicVolume>
+    <SoundEffectVolume>80</SoundEffectVolume>
+    <VocalsVolume>50</VocalsVolume>
     <KaraokeEffect>TR_CONFIG_OFF</KaraokeEffect>
     <KaraokeEffectLevel>1</KaraokeEffectLevel>
   </Sound>
@@ -130,4 +132,4 @@
     <ServerPort>3000</ServerPort>
     <SongCountCoverThreshold>70</SongCountCoverThreshold>
   </Server>
-</root>
+</root>