fix regression from previous commit

doc/docgen.zig

@@ -818,6 +818,7 @@ fn tokenizeAndPrint(allocator: *mem.Allocator, docgen_tokenizer: *Tokenizer, out
 
             std.zig.Token.Id.LineComment,
             std.zig.Token.Id.DocComment,
+            std.zig.Token.Id.ShebangLine,
             => {
                 try out.write("<span class=\"tok-comment\">");
                 try writeEscaped(out, src[token.start..token.end]);

std/zig/ast.zig

@@ -2208,6 +2208,7 @@ test "iterate" {
         .doc_comments = null,
         .decls = Node.Root.DeclList.init(std.debug.global_allocator),
         .eof_token = 0,
+        .shebang = null,
     };
     var base = &root.base;
     assert(base.iterate(0) == null);