Update README.md

Author: Gagniuc

README.md

@@ -58,7 +58,8 @@ for (let v = 0; v < q; v++){
    if(v!=0 && j == 0){i++;}
    if(v!=0 && k == 0){i = 0; d++;}
 
-   t += v + " A[" + d + "][" + i + "][" + j + "]=" + A[d][i][j] + "\n";
+   t += v + " A["+d+"]["+i+"]["+j+"]=";
+   t += A[d][i][j] + "\n";
 }
 
 print(t);