perf fix alpine x86

render.cpp

@@ -59,8 +59,9 @@ static bool is_word_byte(unsigned char c) {
   return (c >= '0' && c <= '9') || (c >= 'a' && c <= 'z') ||
          (c >= 'A' && c <= 'Z') || c == '_';
 }
+template<class R>
 static void wrap_pairs(std::string &dst, std::string_view src, std::string_view open,
-                       std::string_view close, std::span<const int> codes,
+                       std::string_view close, const R& codes,
                        bool boundary = false) {
   size_t olen = open.size(), clen = close.size();
   size_t p = 0;