chore: added some docs to file upload

api/public/swagger.yaml

@@ -663,6 +663,7 @@ paths:
                             examples:
                                 'Example 1':
                                     value: {status: failure, message: 'File request failed.'}
+            description: "It's optional to either provide `_filePath` in url as query parameter\nOr provide `filePath` in body as form field.\nBut it's required to provided else API will respond with Bad Request."
             summary: 'Create a file in SASjs Drive'
             tags:
                 - Drive
@@ -671,11 +672,13 @@ paths:
                     bearerAuth: []
             parameters:
                 -
+                    description: 'Location of SAS program'
                     in: query
                     name: _filePath
                     required: false
                     schema:
                         type: string
+                    example: /Public/somefolder/some.file.sas
             requestBody:
                 required: true
                 content: