Encode: fix inline table first key value whitespace

[cuonglm]

When encoding table inline, we should not apply ident. Otherwise, the key-value will be right align.

For example, this following data:

x := map[string][]map[string]string{
	"one": []map[string]string{
		{"0": "0"},
		{"1": "1"},
	},
}

will be encoded as:

one = [
  {  0 = '0'},
  {  1 = '1'}
]

This PR makes is to be encoded as:

one = [
  {0 = '0'},
  {1 = '1'}
]

[pelletier]

Looks good, thank you for the patch! Sorry it took me a while to find time to review.