fix: typo in localizable.strings (#27)

Author: atierian

Sources/FaceLiveness/Resources/Base.lproj/Localizable.strings

@@ -21,7 +21,7 @@
 "amplify_ui_liveness_challenge_recording_indicator_label" = "REC";
 "amplify_ui_liveness_challenge_instruction_hold_face_during_countdown" = "Hold face position during countdown.";
 "amplify_ui_liveness_challenge_instruction_hold_face_during_freshness" = "Hold face in oval for colored lights.";
-"amplify_ui_liveness_challenge_instruction_move_face_bqck" = "Move back";
+"amplify_ui_liveness_challenge_instruction_move_face_back" = "Move back";
 "amplify_ui_liveness_challenge_instruction_move_face_closer" = "Move closer";
 "amplify_ui_liveness_challenge_instruction_move_face_in_front_of_camera" = "Move face in front of camera";
 "amplify_ui_liveness_challenge_instruction_multiple_faces_detected" = "Ensure only one face is in front of camera";