Update README.md

Author: simran2104

Dice_stimulator/README.md

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 This is a type of GUI which is made in Python using "Random" library. It just shows the user the dice image made using alpha-numeric symbols. Everytime the user rolls the dice, the random function randomly choose a no. and the dice image graphics will be shown.
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-<img src="https://github.com/simran2104/Python-Projects/blob/main/Dice_stimulator/demo.gif" width="250">
+<img src="https://github.com/simran2104/Python-Projects/blob/main/Dice_stimulator/demo.gif" width="350">
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