Persisted error on 03-Optimization.pdf

[mjza]

The error on the formula in page 20 of the following PDF file does still exist:

https://github.com/SharifiZarchi/Introduction_to_Machine_Learning/blob/main/Slides/Chapter_03_Neural_Networks/03-Optimization/03-Optimization.pdf

VmJ(wt) must change to mt+1