Update render-image.html

Author: Liudon

layouts/_default/_markup/render-image.html

@@ -13,10 +13,11 @@
 
 {{ with $src := .Page.Resources.GetMatch .Destination }}
 	{{- if $responsiveImages -}}
-		{{- $imageTypes := slice $src.MediaType.SubType -}}
+		{{- $imageTypes := slice -}}
 		{{- if and hugo.IsExtended (ne $src.MediaType.Type "image/webp") -}}
 			{{- $imageTypes = $imageTypes | append "webp" -}}
 		{{- end -}}
+		{{- $imageTypes = $imageTypes | append $src.MediaType.SubType -}}
 		{{- if gt (index $respSizes 0) $src.Width -}}
 			{{- $respSizes = slice $src.Width -}}
 		{{- end -}}