Fixed additional tutorial progression errors

src/creator.html

@@ -288,7 +288,7 @@ <h2 class="desc">The incorrect choice</h2>
 									<input type="text"
 										placeholder="Description for the incorrect image"
 										required
-										ng-change="validation('change', currIndex); tutorialIncrement(8)"
+										ng-change="validation('change', currIndex); tutorialIncrement(7)"
 										ng-model="questions[currIndex].incorrect.alt"
 										ng-disabled="tutorial.step && tutorial.step < 7">
 								</ng-template>