Update README.md

ICS-HPC/EDA/YARPOSE.Convolution.Interactive.Visualization/README.md

@@ -8,7 +8,7 @@ The basic convolution integral is according to:
 
 $$ y(t)=\int_{-\infty}^{+\infty}{h(t-\lambda)\cdot f(\lambda)\cdot d\lambda}=\int_{0^-}^t{h(t-\lambda)\cdot f(\lambda)\cdot d\lambda} $$
 
- This is is often referred to as graphical convolution. It comes with some features we demonstrated in `Interactive Help and Guide` tab of the tool. Please first look at the help and guide tab.
+ This is often referred to as graphical convolution. It comes with some features we demonstrated in `Interactive Help and Guide` tab of the tool. Please first look at the help and guide tab.
 
 # Run-Online
 Go to the following link and use the online version hosted on `github.io`.