Issue #3191699: MAINTAINERS.txt role descriptions outdated, topic maintainer description missing, provisional maintainership incorrect

I don't much understand the scope of this issue, but...

If we're standardizing on lowercasing "Initiative" and so forth (such that these are not Titles of Roles), "Core" should also be lowercased everywhere according to our content standards. It is lowercase in the first line of the file, but not in the copy-pasted descriptive sections that were added later.

(The project on Drupal.org is "Drupal core", not "Drupal Core". Core is a modifier, not part of the title -- the title is just "Drupal".)

Re "If we're standardizing on lowercasing "Initiative" and so forth", I am not introducing a new thing here. Currently in the file, all the other role names use the same casing, eg. "Drupal Core committers", "Drupal Core subsystem maintainers" and "Drupal Core mentors". All are lowercase from "Drupal Core" onwards. This is not something I am making up.

There was also an instance of "The initiative coordinators" on top of that.

Since the patch was touching almost every line of this role's description, it did not feel logical to submit another issue for this single character. I had no idea it would be a contentious issue, since all the other roles use the same "lowercase after Drupal Core" pattern. It is not new.

I still think that if we're removing this here we should also remove the one remaining instance in the file. Teams are per initiative or per topic; a provisional topic maintainer does not provisionally maintain all of the topics. Either that or we should fix the indentation/locations of the lines. These lines were added on a whim when we updated the governance in 2015 and clearly are not properly maintained when the file is updated, so we should just get rid of them. This is blocking for me.

All three instances in the file are removed in the patch, there are not any more to remove as far as I can see.