chore(oas): Fix OAS related to JWT authentication (#5448)

* chore(oas): Fix OAS related to JWT authentication

* generate openapi spec files

* remove L option in curl examples

www/apps/api-reference/specs/admin/code_samples/JavaScript/admin_auth_token/post.js

@@ -4,6 +4,6 @@ medusa.admin.auth.getToken({
   email: 'user@example.com',
   password: 'supersecret'
 })
-.then(({ accessToken }) => {
-  console.log(accessToekn);
+.then(({ access_token }) => {
+  console.log(access_token);
 });

www/apps/api-reference/specs/admin/code_samples/Shell/admin_auth_token/post.sh

@@ -1,5 +1,5 @@
-curl --location --request POST 'https://medusa-url.com/admin/auth/token' \
---header 'Content-Type: application/json' \
+curl -X POST '{backend_url}/admin/auth/token' \
+-H 'Content-Type: application/json' \
 --data-raw '{
   "email": "user@example.com",
   "password": "supersecret"

www/apps/api-reference/specs/admin/components/schemas/AdminBearerAuthRes.yaml

@@ -1,5 +1,5 @@
 type: object
 properties:
-  accessToken:
-    description: Access token for subsequent authorization.
+  access_token:
+    description: Access token that can be used to send authenticated requests.
     type: string

www/apps/api-reference/specs/admin/paths/admin_auth_token.yaml

@@ -3,24 +3,13 @@ post:
   summary: User Login (JWT)
   x-authenticated: false
   description: >-
-    After a successful login, a JWT token is returned for subsequent
-    authorization.
-  parameters: []
+    After a successful login, a JWT token is returned, which can be used to send
+    authenticated requests.
   requestBody:
     content:
       application/json:
         schema:
-          type: object
-          required:
-            - email
-            - password
-          properties:
-            email:
-              type: string
-              description: The User's email.
-            password:
-              type: string
-              description: The User's password.
+          $ref: ../components/schemas/AdminPostAuthReq.yaml
   x-codegen:
     method: getToken
   x-codeSamples: