Fix small spelling mistake of GlobalExecutorConfig.

[surechen]

No description provided.

[Keruspe]

Heh, indeed. Actually, even with the typo fixed, it looks wrong, sounds like some copy/paste/edit fail, should just be rewritten

[surechen]

Thanks a lot.
I think because this name is used for 'thread::Builder::name'. And in 'Builder' the annotation is:

• [name]: specifies an [associated name for the thread][naming-threads]
  pub struct Builder {
  // A name for the thread-to-be, for identification in panic messages
  name: Option,
  ........
  }
  Does this looks better ?
  /// The closure function used to get the name of the thread. The name can be used for identification in panic messages.

[Keruspe]

Sure! Thanks for noticing that and taking the time to fix it :)