docs: change name of file

Author: hasanisaeed

README.md

@@ -2,7 +2,7 @@
 [Recurrence Plot](http://www.recurrence-plot.tk/glance.php#:~:text=Recurrence%20plot%20%E2%80%93%20A%20recurrence%20plot,a%20certain%20pair%20of%20times) – A recurrence plot (RP) is an advanced technique of **nonlinear** data analysis. It is a visualisation (or a graph) of a square matrix, in which the matrix elements correspond to those times at which a state of a dynamical system recurs (columns and rows correspond then to a certain pair of times).
 
 # Result
-![](results/result.jpg)
+![](results/1D_to_2D.jpg)
 
 # Usage
 **1. Install requirements:**