Fix game logic example (#229)

fix game logic example

even number makes Food available

Quote:
3-6, Resupply:
If no Available Resource value is set: set Available Resource to Food if the rolled number is even or Water if the rolled number is odd

Author: kristjanr

projects/unions-and-literals/the-narrow-trail/README.md

@@ -95,7 +95,7 @@ Here's a step-by-step example of a player losing the game:
 </tr>
 <tr>
 <td>3</td>
-<td>5</td>
+<td>4</td>
 <td><em>Available Resource</em> is now <em>Food</em></td>
 <td>2</td>
 <td>6</td>