Fix ***Step 6***: Run the Llama Demo

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: luffy-yu

docs/source/backends-qualcomm.md

@@ -329,7 +329,7 @@ adb push model.pte /data/local/tmp/llama
 adb push tokenizer.bin /data/local/tmp/llama
 ```
 
-***Step 5***: Run the Llama Demo
+***Step 6***: Run the Llama Demo
 
 - Open the App on Android
 - Select `QUALCOMM` backend