made auto phpcbf changes; added some documentation

docs/api/js/template.js

@@ -0,0 +1,17 @@
+(function(){
+    window.addEventListener('load', () => {
+        const el = document.querySelector('.phpdocumentor-on-this-page__content')
+        if (!el) {
+            return;
+        }
+
+        const observer = new IntersectionObserver(
+            ([e]) => {
+                e.target.classList.toggle("-stuck", e.intersectionRatio < 1);
+            },
+            {threshold: [1]}
+        );
+
+        observer.observe(el);
+    })
+})();