Update README.md

Flows/NanGate45/ariane133/README.md

@@ -16,9 +16,9 @@ The manual macro placement is provided in [manual_floorplan.def](https://github.
 We generate the manual macro placement in two steps:  
 (1) we call the [gridding](https://github.com/TILOS-AI-Institute/MacroPlacement/tree/main/CodeElements/Gridding) scripts to generate grid cells (27 x 27 in our case); (2) we manually place macros on the center of grid cells.
 
-The macro placement can a competitive baseline for [Circuit Training](https://github.com/google-research/circuit_training).
+The macro placement can be a competitive baseline for [Circuit Training](https://github.com/google-research/circuit_training).
 The metrics after different physical design stages are shown below. 
-Note that (1) we set the activity factor to 0.2; (2) the standard cell area does not include physical cells; (3) In order to match [Nature paper](https://www.nature.com/articles/s41586-021-03544-w), we adjust the pin positions to occupy about 60% of the left boundary. 
+Note that (1) we set the activity factor to 0.2 in our flow; (2) the standard cell area does not include physical cells; (3) In order to match [Nature paper](https://www.nature.com/articles/s41586-021-03544-w), we adjust the pin positions to occupy about 60% of the left boundary. 
 (activity factor = 2)
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