Documentation examples for tree.Query outdated

[embik]

I noticed the godoc documentation for go-toml is outdated or wrong (I'm not sure here). (t *TomlTree) Query(query string) returns (*QueryResult, error), yet the documentation is featuring a single-value assignation, for example at doc.go#L86 and doc.go#L204. The first example says

result := tree.Query("$.foo.bar.baz")  // result is 'nil' if the path is not present

which is obviously not true (anymore). It could say something like this:

result, err := tree.Query("$.foo.bar.baz")  // err is an error if the path is not present

Thanks for creating go-toml!

[pelletier]

Thank you for the feedback! I've updated the documentation to reflect the current behavior. Feel free to reopen an issue if you feel like it requires more details or is still incorrect.