Update lang_es.json

[herbertbb]

Intenté dar mejor sentido a las frases. Un español más neutro. I tried to give a better meaning to the phrases. A more neutral Spanish.

[yrjarv]

I don't think @marticliment wants us translators to edit .json files directly, but rather through tolgee :)

[marticliment]

Hello @herbertbb, @yrjarv is right. Merging PRs breaks on language files breaks integration with Tolgee.

Please follow the instructions here: https://github.com/marticliment/ElevenClock/wiki#translating-elevenclock