How do I properly print out a context string within an img src attribute?

[bogdano]

<img src="https://127.0.0.1:8090/api/files/{ collection_id }/{ park.ParkRecordId }/{ park.Images[0] }" alt="" class="w-20 h-20" />

This doesn't work, i.e., the URL becomes https://127.0.0.1:8090/api/files/%7Bcollection_id%7D/%7Bpark.ParkRecordId%7D/%7Bpark.Images[0]%7D

[bogdano]

<img src={ string(templ.URL(fmt.Sprintf("/api/files/%s/%s/%s", collection_id, park.ParkRecordId, park.Images[0])))} alt="" class="w-20 h-20" />