bug: do not format escaped quotes as in `default:"[\"a\"]"`

[gabyx]

Go lines removes escapes as in:

struct A {
a []string `yaml:"a" default:"[\"RS512\", \"RSA-OAEP\"]"`
}

to

struct A {
a []string `yaml:"a" default:"["RS512", "RSA-OAEP"]"`
}

which is wrong.

Note: You can disable formatting tags with --no-reformat-tags

[mgabeler-lee-6rs]

I believe this is a dupe of #142, in which case it should be fixed by #143