fix typo in composer.json file

Author: guysolamour

composer.json

@@ -19,7 +19,7 @@
     "illuminate/support": "^6.0|^7.0|^8.0"
   },
   "require-dev": {
-    "orchestra/testbench": "^4.0|^5.0"|^6.0,
+    "orchestra/testbench": "^4.0|^5.0|^6.0",
     "phpunit/phpunit": "^8.4|^9.0"
   },
   "autoload": {