docs: Fix up the template significantly.

Author: sustained

data/libraries/TEMPLATE.md

@@ -1,24 +1,42 @@
 # Template
 
-> **NOTE**: Max 25 lines for description.
+# Required fields
+
+The `name`, `url` and `fields` fields are required.
+
+# Types
+
+- The `fields` field must be an array of strings and/or objects containing a `name` and a `value`.
+- The `colour` field should be a hexadecimal colour, a named colour (e.g. `RED`), or `RANDOM`.
+- The `icon` field is the filename (+ extension) of the icon in `assets/images/icons/`.
+- The `author.avatar` field should optionally be the filename (+ extension) of the avatar in `assets/images/avatars/`.
+- The `tags` field should be an array of strings containing arbitrary tags.
+
+---
 
 ```json
 {
-  "name": "",
-  "tagline": "",
-  "tags": ["..."],
-  "icon": "",
+  "name": "Example Library",
+  "tagline": "Example Library solves your problems",
+  "tags": ["ui", "component", "library", "material", "design"],
+  "icon": "example-library.png",
+  "colour": "RANDOM",
   "url": {
-    "site": "",
-    "docs": "",
-    "repo": "",
-    "bugs": ""
+    "site": "https://www.example.com/example-library/site",
+    "docs": "https://www.example.com/example-library/docs",
+    "repo": "https://www.example.com/example-library/code",
+    "bugs": "https://www.example.com/example-library/bugs"
   },
-  "fields": ["..."],
+  "fields": [
+    { "name": "Fast", "value": "Example Library is fast" },
+    { "name": "Easy", "value": "Example Library is easy to use" },
+    { "name": "Secure", "value": "Example Library is safe" },
+    "Use Example Library today!"
+  ],
   "author": {
-    "name": "",
-    "url": "",
-    "avatar": ""
+    "name": "Example Author",
+    "url": "https://www.example.com/users/example-author",
+    "avatar": "example-author.png"
   }
 }
 ```