message: Updating extension id regex
diff: "description": "farmBeatsExtensionId to be queried.",
  "required": true,
  "type": "string",
  - "pattern": "^[A-za-z]{3,50}[.][A-za-z]{3,100}$"
  + "pattern": "^[a-zA-Z]{3,50}[.][a-zA-Z]{3,100}$"
  },
  {
  "$ref": "../../../../../common-types/resource-management/v2/types.json#/parameters/ApiVersionParameter"
  "properties": {
  "extensionId": {
  "description": "Extension Id.",
  - "pattern": "^[A-za-z]{3,50}[.][A-za-z]{3,100}$",
  + "pattern": "^[a-zA-Z]{3,50}[.][a-zA-Z]{3,100}$",
  "type": "string",
  "readOnly": true
  },
  "description": "FarmBeatsExtension ID.",
  "maxLength": 100,
  "minLength": 2,
  - "pattern": "^[A-za-z]{3,50}[.][A-za-z]{3,100}$",
  + "pattern": "^[a-zA-Z]{3,50}[.][a-zA-Z]{3,100}$",
  "type": "string",
  "readOnly": true
  },
  