Fix invalid cURL command example

Author: manning-ncsa

Diff for: api/desaccess.openapi.yaml

@@ -24,12 +24,11 @@ paths:
           DES account credentials and target database
           Example (cURL):
       
-              curl \
-                  -X POST \
-                  -H "Accept: application/json" \
-                  -d '{"username": "jsmith", "password": "***", "database": "desdr"}' \
-                  https://des.ncsa.illinois.edu/desaccess/api/login 
-
+              curl -X POST -H "Accept: application/json" \
+                  -d 'username=********' \
+                  -d 'password=********' \
+                  -d 'database=desdr' \
+                  https://des.ncsa.illinois.edu/desaccess/api/login
 
         content:
           application/json:
@@ -444,4 +443,4 @@ components:
               cutout_summary:
                 type: object
                 description: Object with input and processed job options and the detailed output for each cutout
-                example: {}
+                example: {}