Create alias big_belly -> large_belly

BUR #15979 has been rejected.

create alias big_belly -> large_belly

For consistency with our various other large_* tags.
I wouldn’t mind sticking with big belly but I thought this was worth suggesting.

for reference here's our current set of big_* tags and aliases:

large_breasts ← big_breasts 1.1M 	
thick_thighs ← big_thighs 64k 	
large_areolae ← big_areolae 14k 	
large_penis ← big_penis 14k 	
huge_ass ← big_butt 9.8k 	
big_hair 7.5k 	
big_belly 2.6k 	
large_tail ← big_tail 2.3k 	
large_hat ← big_hat 2.1k 	
big_head 447 	
big_nose 444 	
big_eyes 423 	
large_ears ← big_ears 344 	
big_mouth 59 	
big_waves 9 	

Sounds more natural to say a big belly rather then a large belly.

We can go with pot belly 😋

I did think about that actually but I quickly noticed that can be said about all the other large_* tags lol

BUR #16408 has been approved by @nonamethanks.

create alias large_belly -> big_belly

Alternative BUR.

This bulk update request is pending automatic rejection in 5 days.

This bulk update request has been rejected because it was not approved within 45 days.

The bulk update request #15979 (forum #237132) has been rejected by @DanbooruBot.

Well nobody offered any opinion on why either is the better choice so I'm going to go with the least impactful change.

The bulk update request #16408 (forum #239514) has been approved by @nonamethanks.