Update debug logging page with perf metrics print

Author: yatarkan

site/docs/guides/debug-logging.mdx

@@ -54,3 +54,25 @@ AFFINITY: CORE
 EXECUTION_DEVICES:
 CPU: Intel(R) Xeon(R) Platinum 8468
 ```
+
+When Speculative Decoding ot Prompt Lookup pipeline is executed, performance metrics will be also printed.
+
+```sh title="Output:"
+===============================
+Total duration, sec: 26.6217
+Draft model duration, sec: 1.60329
+Main model duration, sec: 25.0184
+Draft model duration, %: 6.02248
+Main model duration, %: 93.9775
+AVG acceptance rate, %: 21.6809
+===============================
+REQUEST_ID: 0
+Main model iterations: 47
+Token per sec: 3.75633
+AVG acceptance rate, %: 21.6809
+Accepted tokens by draft model: 51
+Generated tokens: 100
+Accepted token rate, %: 51
+===============================
+Request_id: 0 ||| 40 0 40 20 0 0 40 40 0 20 20 20 0 40 0 0 20 80 0 80 20 0 0 0 40 80 0 40 60 40 80 0 0 0 0 40 20 20 0 40 20 40 0 20 0 0 0
+```