These two keywords were missing from the index, let's add them.
- tune.h2.be.glitches-threshold
- tune.h2.be.initial-window-size
- tune.h2.be.max-concurrent-streams
+ - tune.h2.be.rxbuf
- tune.h2.fe.glitches-threshold
- tune.h2.fe.initial-window-size
- tune.h2.fe.max-concurrent-streams
- tune.h2.fe.max-total-streams
+ - tune.h2.fe.rxbuf
- tune.h2.header-table-size
- tune.h2.initial-window-size
- tune.h2.max-concurrent-streams