Minor readme corrections again.

Author: msznajder

README.md

@@ -67,7 +67,7 @@ raw_measurement.decode().rstrip().split(',')
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 ├── logs               				 <- Data logged by Online and Offline QRS Detector in .csv format.
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-├── plots          	   			 <- Plots generated by Offline QRS Detector.
+├── plots          	   			  <- Plots generated by Offline QRS Detector.
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 ├── qrs_detector_offline_example.ipynb  	<- Jupyter notebook with Offline QRS Detector usage.
 │