Fix slide ordering

.eleventy.js

@@ -9,6 +9,12 @@ module.exports = function (config) {
 
     config.addPassthroughCopy("src/assets");
 
+    config.addCollection("slides", function(collectionApi) {
+        return collectionApi.getFilteredByTag("slide").sort((a, b) => {
+            return a.fileSlug.localeCompare(b.fileSlug);
+        });
+      });
+
     return {
         passthroughFileCopy: true,
         dataTemplateEngine: false,

src/slides/slides.11tydata.json

@@ -1,6 +1,6 @@
 {
     "tags": [
-      "slides"
+      "slide"
     ],
     "permalink": false
 }