renamed "voidtype" to "void_type"

javascript/ql/src/semmle/javascript/TypeScript.qll

@@ -2119,7 +2119,7 @@ class BooleanLikeType extends Type {
 /**
  * The `void` type.
  */
-class VoidType extends Type, @voidtype { }
+class VoidType extends Type, @void_type { }
 
 /**
  * The `undefined` type.

javascript/ql/src/semmlecode.javascript.dbscheme

@@ -622,7 +622,7 @@ case @type.kind of
 | 7 = @object_type
 | 8 = @canonical_type_variable_type
 | 9 = @typeof_type
-| 10 = @voidtype
+| 10 = @void_type
 | 11 = @undefinedtype
 | 12 = @nulltype
 | 13 = @nevertype

javascript/ql/src/semmlecode.javascript.dbscheme.stats

@@ -946,7 +946,7 @@
 <v>2903</v>
 </e>
 <e>
-<k>@voidtype</k>
+<k>@void_type</k>
 <v>1</v>
 </e>
 <e>