Update types path in package.json for debug package (#805)

* Update types path in package.json for debug package

* Correct types path in package.json for debug package

Author: JoviDeCroock

.changeset/grumpy-badgers-tell.md

@@ -0,0 +1,5 @@
+---
+"@preact/signals-debug": patch
+---
+
+Correct types path in package.json for debug package

packages/debug/package.json

@@ -19,7 +19,7 @@
   "main": "dist/debug.js",
   "module": "dist/debug.module.js",
   "unpkg": "dist/debug.min.js",
-  "types": "dist/debug.d.ts",
+  "types": "dist/signals-debug.d.ts",
   "source": "src/index.ts",
   "exports": {
     ".": {