[bulk] Dark Souls series numbering

create alias dark_souls_2 -> dark_souls_ii
create alias dark_souls_3 -> dark_souls_iii
remove implication dark_souls_2 -> souls_(from_software)
remove implication dark_souls_3 -> souls_(from_software)
create implication dark_souls_ii -> souls_(from_software)
create implication dark_souls_iii -> souls_(from_software)

Link to request

The Final Fantasy series, of course, uses Roman numerals rather than Arabic. Our tags reflect this, as I understand they should (not regarding the /ff# abbreviated aliases).

The Dark Souls series also uses Roman numerals in all official branding. Is there any reason these tags should use Arabic rather than Roman?

If the official title uses Roman or Arabic numerals, then our tags should reflect it.

The tag alias dark_souls_2 -> dark_souls_ii has conflicting wiki pages. dark_souls_ii should be updated to include information from dark_souls_2 if necessary.

The bulk update request #679 has been approved.