(DOCSP-49806) Clarify misleading parameters description. (#858)

The [current
doc](https://www.mongodb.com/docs/ops-manager/current/core/api/)
explains the "parameters" field in error as:

"List of parameters included in the Atlas Administration API request"

This is quite misleading since this list is returning additional
information for the error (no correlation with the request params).

In the Java this field is
[documented](https://github.com/10gen/mms/blob/d1915c2f3ad23a9707f5a66418390d60807936f9/server/src/main/com/xgen/svc/mms/api/res/common/ApiError.java#L62)
as: "Parameters used to give more information about the error.". Which
seems to me worded much better and should be used in the public
documents as is.
- [DOCSP-49806](https://jira.mongodb.org/browse/DOCSP-49806)
-
[STAGING](https://deploy-preview-858--docs-ops-manager.netlify.app/core/api/#errors)

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Author: elyse-mdb

source/core/api.txt

@@ -533,7 +533,7 @@ contains five fields:
 
   * - ``parameters``
     - array of strings
-    - List of parameters passed in the |api| request.
+    - List of parameters that provide further details about the error.
 
   * - ``reason``
     - string