Back exists → Back exits (#1054)

animate.css

@@ -1034,7 +1034,7 @@
   -webkit-animation-name: backInUp;
   animation-name: backInUp;
 }
-/* Back exists */
+/* Back exits */
 @-webkit-keyframes backOutDown {
   0% {
     -webkit-transform: scale(1);

docs/index.html

@@ -158,7 +158,7 @@
     
 
       <section class="back_exists" id="back_exists">
-        <h3 class="animation-title">Back exists</h3>
+        <h3 class="animation-title">Back exits</h3>
         <ul class="animation-group">
     <li class="animation-item" data-animation="backOutDown">
       <span class="animation-item--title">backOutDown</span>

source/animate.css

@@ -21,7 +21,7 @@
 @import 'back_entrances/backInRight.css';
 @import 'back_entrances/backInUp.css';
 
-/* Back exists */
+/* Back exits */
 @import 'back_exits/backOutDown.css';
 @import 'back_exits/backOutLeft.css';
 @import 'back_exits/backOutRight.css';