Updated Digital voice DV over LoRa (markdown)

Digital-voice-DV-over-LoRa.md

@@ -1,4 +1,4 @@
-![alt text](https://raw.githubusercontent.com/sh123/esp32_loraprs/master/images/talkie.png)
+![alt text](https://raw.githubusercontent.com/sh123/esp32_loraprs/master/extras/images/talkie.png)
 
 - This modem could be used in conjunction with [Android Codec2 Walkie-Talkie](https://github.com/sh123/codec2_talkie), when application connects to the modem, instead of sending AX25 APRS packets it sends Codec2 speech encoded frames over KISS. This enables digital voice communication between one or multiple modems. 
 
@@ -8,18 +8,18 @@
 
 - Go to application settings into KISS section and "Enable Extensions"
 
-![alt text](https://raw.githubusercontent.com/sh123/esp32_loraprs/master/images/enable_extensions.png)
+![alt text](https://raw.githubusercontent.com/sh123/esp32_loraprs/master/extras/images/enable_extensions.png)
 
 - Select appropriate LoRa modem settings, such as frequency, bandwidth, spread factor
 
-![alt text](https://raw.githubusercontent.com/sh123/esp32_loraprs/master/images/lora_settings.png)
+![alt text](https://raw.githubusercontent.com/sh123/esp32_loraprs/master/extras/images/lora_settings.png)
 
 - Select Codec2 mode
 
-![alt text](https://raw.githubusercontent.com/sh123/esp32_loraprs/master/images/codecmode.png)
+![alt text](https://raw.githubusercontent.com/sh123/esp32_loraprs/master/extras/images/codecmode.png)
 
 - Make sure your RF speed is larger than Codec2 mode speed, also S-meter is available with enabled extensions and S-meter indicates signal level above which reception is possible for given LoRa parameters with bold text.
 
-![alt text](https://raw.githubusercontent.com/sh123/esp32_loraprs/master/images/rf_vs_c2.png)
+![alt text](https://raw.githubusercontent.com/sh123/esp32_loraprs/master/extras/images/rf_vs_c2.png)
 
 - Alternatively, all LoRa options could be set to default values in `config.h`, so they will be set immediately after reboot, but S-meter will not be visible