docs: Update log output for Zephyr example

This commit updates the log output for the Zephyr example with logging
from target. It also removes the verison of Zephyr from the README.md
which does not need to be updated manually.

examples/zephyr_example/README.md

@@ -66,21 +66,27 @@ Binaries to be flashed are placed in a separate folder (binaries.c) for each pos
 
 Here is the example's console output:
 
-```
-*** Booting Zephyr OS build zephyr-v3.2.0-3548-ga1bb9c9d1736 ***
+``` text
 Running ESP Flasher from Zephyr
 Connected to target
-Baudrate changed
+Transmission rate changed.
 Erasing flash (this may take a while)...
 Start programming
 Progress: 100 %
 Finished programming
+Flash verified
 Erasing flash (this may take a while)...
 Start programming
 Progress: 100 %
 Finished programming
+Flash verified
 Erasing flash (this may take a while)...
 Start programming
 Progress: 100 %
 Finished programming
+Flash verified
+********************************************
+*** Logs below are print from slave .... ***
+********************************************
+Hello world!
 ```