Source Gitlab: fix typo in specification (#9297)

Author: jdclarke5

airbyte-integrations/connectors/source-gitlab/source_gitlab/spec.json

@@ -15,7 +15,7 @@
       },
       "private_token": {
         "type": "string",
-        "title": "Privat Token",
+        "title": "Private Token",
         "description": "Log into your GitLab account and then generate a personal Access Token.",
         "airbyte_secret": true
       },