DOCS: Fix typo.
(cherry picked from commit ba26c0d7670412391f252fac1693dfd8db197db7)
GRIM: Fix music mismatch when shooting Hector.
(cherry picked from commit 50d46a4d32df90631de4913ab06017b9376a4a5d)
GRIM: Fix music mixup at the end of the world. Fix #614
(cherry picked from commit 701624c1087fbbc14c7e2ceb7c32d2436182acae)