Bulk Update Request: more *_backgorund typos

Script

create alias red_backgorund (0) -> red_background (11641)
create alias orange_backgorund (0) -> orange_background (7277)
create alias yellow_backgorund (0) -> yellow_background (9943)
create alias green_backgorund (0) -> green_background (17780)
create alias black_backgorund (0) -> black_background (18432)
create alias tan_backgorund (0) -> tan_background (7119)
create alias brown_backgorund (0) -> brown_background (9664)
create alias pink_backgorund (0) -> pink_background (23941)
create alias teal_backgorund (0) -> teal_background (920)
create alias gray_backgorund (0) -> grey_background (77198)
create alias gradient_backgorund (0) -> gradient_background (38965)
create alias blurred_backgorund (0) -> blurred_background (16465)
create alias bedding_backgorund (0) -> bedding_background (3192)
create alias abstract_backgorund (0) -> abstract_background (46340)
create alias plain_backgorund (0) -> simple_background (1221109)
create alias pattern_backgorund (0) -> pattern_background (11312)

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