fix: remove / from @automapper/classes default exports (#589)

Co-authored-by: dtap <tapai.david@cae.com>

Author: dtap001

packages/classes/package.json

@@ -7,7 +7,7 @@
         "reflect-metadata": "~0.1.13"
     },
     "exports": {
-        "./": {
+        ".": {
             "types": "./src/index.d.ts",
             "import": "./index.js",
             "require": "./index.cjs"