dev: Add prettier-plugin-void-html

This is a Prettier plugin to format void HTML elements using the void
tag syntax instead of self-closing syntax. Additionally, if
self-closing syntax is used on non-void elements, then they will be
"unwrapped" so that both the opening and closing tags are present.

.prettierrc

@@ -1,5 +1,8 @@
 {
-  "plugins": ["prettier-plugin-go-template"],
+  "plugins": [
+    "prettier-plugin-go-template",
+    "@awmottaz/prettier-plugin-void-html"
+  ],
   "overrides": [
     {
       "files": ["*.html"],

package.json

@@ -9,6 +9,7 @@
   "author": "",
   "license": "",
   "devDependencies": {
+    "@awmottaz/prettier-plugin-void-html": "^1.8.0",
     "@tailwindcss/cli": "^4.0.0",
     "@tailwindcss/typography": "^0.5.15",
     "prettier": "^3.5.0",