Add "haemorrhagic" to UK dictionary

[DimitriPapadopoulos]

Both "hemorrhage" / "haemorrhage", but only "hemorrhagic" are currently in the aspell dictionary. It would make sense to add "haemorrhagic".

From the Google Books Nmap database:

• https://books.google.com/ngrams/graph?content=haemorrhagic%2Chemorrhagic&year_start=1800&year_end=2019&corpus=en-2019
• http://app.aspell.net/lookup-freq?words=hemorrhagic%0D%0Ahaemorrhagic%0D%0A;also=similar;parm=full