Updated Frequently asked questions (markdown)

Frequently-asked-questions.md

@@ -13,4 +13,6 @@
 - My USB modem is not detected
   - Run `lsusb` command and find your adapter vendor:product pair, run `dmsg` command and find lines modem detection log lines, create issue report with this information
 - Application keeps reconnecting to USB modem
-  - Make sure Serial debugging is disabled in modem and serial USB is used only for data transfer, make sure it works with empty sketch, where serial is initialized, but no data and logging transfers performed
+  - Make sure Serial debugging is disabled in modem and serial USB is used only for data transfer
+  - Make sure it works with empty sketch, where serial is initialized, but no data and logging transfers performed
+  - Make sure modem serial boot log is disabled on platforms such as ESP32