Config merging broken if array

[mathieutu]

Version

@nuxt/content: v1.6.1
nuxt: v2.14.3

Steps to reproduce

Use an array as config in content.

Exemple:

content: {
    markdown: {
      remarkExternalLinks:
        content: [
            { type: 'text', value: '1st' },
			{ type: 'text', value: '2nd' }
        ],
      }
    }
  },

What is Expected?

The array should be passed as it to the plugin options.

{
	"name":"remark-external-links",
	"options":{
		"content": [
			{"type":"text","value":"1st"},
			{"type":"text","value":"2nd"}
		]
	}
}

What is actually happening?

The array is converted to an object.

{
	"name":"remark-external-links",
	"options":{
		"content":{
			"0":{"type":"text","value":"1st"},
			"1":{"type":"text","value":"2nd"}
		}
	}
}

Everything happens in the lib/utils.js file.
In the second iteration the array is recursively passed to the mergedConfig function, and is converted to an object by the reduce.

Thanks for your work.

[mathieutu]

For the record, you can't use a function in this case too, because of the typeof value === 'function' && defaultValue condition. 

[benjamincanac]

@mathieutu Would you mind trying #408 to ensure it solves your problem?