fix typo in comment

Author: KlausBlum

extension/OOoLilyPond/Vars.xba

@@ -100,7 +100,7 @@ Private oFileAccess As Object
 ' Error Messages
 Private iErrRow(1000) As Integer 'row of error
 Private iErrCol(1000) As Integer 'column of error
-Private iErrClass(1000) As Integer '1 = waring, 2 = error
+Private iErrClass(1000) As Integer '1 = warning, 2 = error
 Private sErrMsg(1000) As String 'error messages
 Private lErrMsgHighlightColor As Long ' background color for error message label when highlighted
 Private iNErr As Integer 'number of errors
@@ -159,4 +159,4 @@ Sub PrivateConstants()
 
 End Sub
 
-</script:module>
+</script:module>