Update main README

Signed-off-by: Samuel Monson <[email protected]>

Author: sjmonson

README.md

@@ -233,8 +233,8 @@ guidellm benchmark \
   --rate 16 \
   --warmup 0.1 \
   --cooldown 0.1 \
-  --max-errors 5 \
-  --over-saturation True
+  --max-errors 5
+  --detect-saturation
 ```
 
 **Key parameters:**
@@ -244,7 +244,7 @@ guidellm benchmark \
 - `--max-seconds`: Maximum duration in seconds for each benchmark before automatic termination
 - `--max-requests`: Maximum number of requests per benchmark before automatic termination
 - `--max-errors`: Maximum number of individual errors before stopping the benchmark entirely
-- `--over-saturation`: Enable over-saturation detection to automatically stop benchmarks when the model becomes over-saturated (use `True` for defaults or a JSON dict for custom configuration)
+- `--detect-saturation`: Enable over-saturation detection to automatically stop benchmarks when the model becomes over-saturated (see also `--over-saturation` for more advanced control)
 
 ## Development and Contribution