fix: format script glob only matched directories (#219)

The format script used 'prettier --write src/**/' where the trailing slash
made the glob match directories only, so prettier never actually formatted
files. Change to 'prettier --write .' to mirror the existing lint script
('prettier --check .'). .prettierignore already excludes generated content.

Closes #216

Co-authored-by: dobby-yivi-agent[bot] <275734547+dobby-yivi-agent[bot]@users.noreply.github.com>

Author: dobby-coder[bot]

package.json

@@ -10,7 +10,7 @@
         "check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
         "check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch",
         "lint": "prettier --check . && eslint .",
-        "format": "prettier --write src/**/",
+        "format": "prettier --write .",
         "prepare": "husky"
     },
     "devDependencies": {