crawl converts md images to raw link

app/crawler/main.sh

@@ -126,6 +126,10 @@ crawl_with() {
 				| sed 's/](\([^#h]\)/]\(%%%\1/g'
 		)"
 		export CONTENT="${CONTENT//"%%%"/"${human_url%/*}/"}"
+		export CONTENT="$(
+			printf "%s\n" "$CONTENT" \
+				| sed 's/!\[\([^]]*\)](\([^)]*\)\/-\/tree\/\([^)]*\))/![\1](\2\/-\/raw\/\3)/g'
+		)"
 		export ID="$(
 			local sum="$pid/"
 			local title_so_far=""