Update metadata for HTML snippets

collections/html/head-basics.yaml

@@ -1,5 +1,6 @@
 slug: html/head-basics
 name: HTML Head Basics
+miniName: Head Basics
 featured: true
 snippetIds:
   - html/s/recommended-minimum-head

collections/html/index.yaml

@@ -0,0 +1,14 @@
+slug: html
+name: HTML Snippets
+shortName: HTML
+topLevel: true
+languageMatcher: html
+featured: true
+splash: tram-car-2.png
+description: >-
+  The HTML snippet collection contains tips, tricks and practical code examples
+  to help you master web development. This collection covers elements, tags,
+  links, forms, tables and more.
+shortDescription: >-
+  Master HTML 5 with this collection of tips, tricks and code examples.
+