Upgrade Spanish Language to Inform v10

[sarganar]

Spanish Language was upgraded in order to set the language of play to spanish.

Please ensure that you have followed these steps to make a pull request for 10.1 or 9.3 (6M62):

• This extension is stable and production-ready
  • Please also check that your extension only depends on other stable extensions which are supported for the target Inform 7 release. An extension which depends on extensions which are not stable cannot be accepted.
• This extension has a valid version number:
  • For 10.1: use semantic versioning: MAJOR.MINOR.PATCH, ex: 2.1.0. This means that the major version number must be incremented when and only when you make a change that is not backwards compatible.
  • For 9.3: use Inform's date based version number: MAJOR/DATE, ex: 2/220517.
• This extension has the correct file name:
  • For 10.1: put the major version number at the end of the file name, ex: Extension Name-v1.i7x
  • For 9.3: do not include the version number, and the file name must match the extension's name as defined in the file exactly, ex:
    • File name: Extension Name.i7x
    • Extension begins: Version 1/220517 of Extension Name by Author Name begins here.
• This extension has documentation
• The correct branch (10.1 or 9.3) has been selected for this pull request