fix(telegram): resolve alert sending invalid json (#3605)

The telegram alert was using invalid json (though telegram did accept it). JSON has been corrected and is now valid

Author: dgibbs64

lgsm/functions/alert_telegram.sh

@@ -12,12 +12,13 @@ json=$(cat <<EOF
 	"chat_id": "${telegramchatid}",
 	"parse_mode": "HTML",
 	"text": "<b>${alertemoji} ${alertsubject} ${alertemoji}</b>\n\n<b>Server name</b>\n${servername}\n\n<b>Message</b>\n${alertbody}\n\n<b>Game</b>\n${gamename}\n\n<b>Server IP</b>\n<a href='https://www.gametracker.com/server_info/${alertip}:${port}'>${alertip}:${port}</a>\n\n<b>Hostname</b>\n${HOSTNAME}\n\n<b>More info</b>\n<a href='${alerturl}'>${alerturl}</a>",
-	"disable_web_page_preview": "yes",
+	"disable_web_page_preview": "yes"
+}
 EOF
 )
 
 fn_print_dots "Sending Telegram alert"
-telegramsend=$(curl --connect-timeout 10 -sSL -H "Content-Type: application/json" -X POST -d """${json}""" ${curlcustomstring} "https://${telegramapi}/bot${telegramtoken}/sendMessage" | grep "error_code")
+telegramsend=$(curl --connect-timeout 10 -sSL -H "Content-Type: application/json" -X POST -d "$(echo -n "${json}" | jq -c .)" ${curlcustomstring} "https://${telegramapi}/bot${telegramtoken}/sendMessage" | grep "error_code")
 
 if [ -n "${telegramsend}" ]; then
 	fn_print_fail_nl "Sending Telegram alert: ${telegramsend}"