Add a 5 in (3,8)

MineRobber9000 · web-flow · commit 314ff3d50329 · 2018-08-29T01:45:50.000-04:00
It's a valid move, if my memory of sudoku serves me right.
diff --git a/README.md b/README.md
@@ -35,7 +35,7 @@
     <td>8
     <td>7
     <td>2
-    <td>&nbsp;
+    <td>5
     <td>9
   <tr>            <!-- Row 4 -->
     <td>7
