fixe file endings

README.md

@@ -37,4 +37,3 @@ Or alternatively with `/addwidget`:
 ```
 /addwidget https://goodtimer.lubiland.de/#2020-11-24T00:00+01:00
 ```
-

index.html

@@ -16,4 +16,4 @@
 </span>
 
 
-<script src="main.js?1602704189"></script>
+<script src="main.js?1602704189"></script>

main.css

@@ -3,4 +3,4 @@ body {
     color: #0f0;
     font-family: monospace;
     font-size: 3rem;
-}
+}

main.js

@@ -33,4 +33,4 @@ const update_all = () => {
     document.getElementById('output').innerHTML = countdown(hash_date);
 }
 update_all();
-setInterval(update_all, 500);
+setInterval(update_all, 500);