C, which "is not a big language, and is not well served by a big book", according to Thompson and Ritchie's 1988 introduction in the K&R2, is up to 683 pages in C11. Almost triple the size of C90's 230 pages.
How about something non-language? USB 3.2 spec (just released Sep 22): 100+ megabyte .zip file download. Up from 2.0's 73.