add description in the call sc

[Thykof]

Delivery Quality Checklist

• Breaking Changes in API:
  Does this PR introduce breaking changes in the API?

  • If yes, have you considered making it backward compatible?
  • If backward compatibility is not considered, set the "breaking-change" label.

• Changelog:

  • For bugfix PR, set the "bugfix" label
  • If this change should not appear in changelog, use "ignore-for-changelog" label

• Version Update Handling:
  Have you ensured that the version update by user is handled correctly?

• PR Dependency:
  Does this PR depend on another PR?

  • If yes, is it necessary for the dependency to be released prior to merging this one?

• Documentation:

  • Are any necessary changes made to user-facing documentation?
  • Confirm that API documentation is updated with any relevant changes.
  • Check that README and other documentation files are accurate and current.

[Thykof]

QA:

curl --location 'http://station.massa/cmd/executeFunction' \
--header 'Content-Type: application/json' \
--header 'Accept: application/json' \
--data '{
  "nickname": "buildnet-fullpower",
  "name": "functionName",
  "at": "AU1MPDRXuR22mwYDFCeZUDgYjcTAF1co6xujx2X6ugoHeYeGY3B5",
  "async": false,
  "args": "",
  "coins": 0,
  "maxGas": "1",
  "expiry": 3,
  "fee": "10000000",
  "description": "this is the description"
}'

[thomas-senechal]

Looks good to me !