[ES] Add `Community/How you can help!`

[Raphiel-R]

Self-check

• [x] The changes are tested against the contribution checklist
• [ ] (translations only) The changes are reviewed on GitHub by a fluent speaker

[Pisapou]

• Add ` before and after the name file just to make your title easier to read.
• Also, don’t check the "changes are reviewed by a fluent speaker" until someone reviewed it.

[TicClick]

I have reverted your last commit, as Pisapou was talking about the pull request's title, not the actual file name -- they suggested that you call it

[ES] Add `Community/How you can help!`

or something along that line, using backticks for formatting.

also, please send your future pull requests from a branch other than master -- the contribution guide covers that process (see here for GitHub Desktop if you have it installed)