fix : image link issue fixed in README.md

Author: sadrasabouri

README.md

@@ -4,10 +4,9 @@
 # Roles
 | Role            | image(s)                                                                                                                                |
 | :-------------: |:----------------------------------------------------------------------------------------------------------------------------:           |
-|      Don        | <img width="500" height="500" src="https://raw.githubusercontent.com/sadrasabouri/mafia/master/static/images/roles/Don.png">            |
-|     Doctor      | <img width="500" height="500" src="https://raw.githubusercontent.com/sadrasabouri/mafia/master/static/images/roles/Doctor_1.png">
-                    <img width="500" height="500" src="https://raw.githubusercontent.com/sadrasabouri/mafia/master/static/images/roles/Doctor_2.png">       |
-|     Resident    | <img width="500" height="500" src="https://raw.githubusercontent.com/sadrasabouri/mafia/master/static/images/roles/Resident_1.png">     |
+|      Don        | <img width="100" height="100" src="https://raw.githubusercontent.com/sadrasabouri/mafia/master/static/images/roles/Don.png">            |
+|     Doctor      | <img width="100" height="100" src="https://raw.githubusercontent.com/sadrasabouri/mafia/master/static/images/roles/Doctor_1.png"><img width="100" height="100" src="https://raw.githubusercontent.com/sadrasabouri/mafia/master/static/images/roles/Doctor_2.png">       |
+|     Resident    | <img width="100" height="100" src="https://raw.githubusercontent.com/sadrasabouri/mafia/master/static/images/roles/Resident_1.png">     |
 
 # References
 Icons made by <a href="https://www.flaticon.com/authors/vectors-market" title="Vectors Market">Vectors Market</a> from <a href="https://www.flaticon.com/" title="Flaticon"> www.flaticon.com</a>