Mention that catchupTicks set to 1 are equivalent to set to 0 (disabled) #784

I mean, overall I initially expected the behavior to be

                    final long catchup = 1L + io.papermc.paper.configuration.GlobalConfiguration.get().misc.catchupTicks.or(4);

instead of

                    final long catchup = (long)Math.max(
                        1,
                        io.papermc.paper.configuration.GlobalConfiguration.get().misc.catchupTicks.or(5)
                    );

when I first saw that option. That said, if this is the intended behavior, it would be good to document that the minimum effective enabled value is 2, or at least mention that setting it to 1 is equivalent to 0.

Also, if 0 is meant to represent disabled, it's fairly intuitive to expect 1 to be the minimum enabled value. A user might intentionally configure it to 1 because they want the smallest possible non-disabled setting, so having it behave the same as 0 is somewhat surprising unless it's explicitly documented.