Catalyst Signed Document spec, absent `content type` and `content encoding`

[Mr-Leshiy]

Summary

signed_doc.json generated specification had a wrong definition for "Contest Delegation" document type.
The whole header section with the content type and content encoding is missing.

current signed_doc.json view

...
    "Contest Delegation": {
      "authors": {
        "Neil McAuliffe": "neil.mcauliffe@iohk.io"
      },
      "business_logic": {
     ...
      },
      "description": ...
      "metadata": {

expected one

...
    "Contest Delegation": {
      "authors": {
        "Neil McAuliffe": "neil.mcauliffe@iohk.io"
      },
      "business_logic": {
     ...
      },
      "description": ...
     "header": {
        "content type": {
             ....
            "required": "excluded",
         },
         "content encoding": {
             ....
            "required": "excluded",
         }
       }
      "metadata": {
      ...
  }

[nathanbogale]

@Mr-Leshiy there's a commented section on line 56 on , contest_delegatoin.cue please uncomment it in your next commit, it will close this issue

56 - //headers: "content type": value: "application/cbor"