add missing "the"s

index.bs

@@ -2011,7 +2011,7 @@ De-mixing for [=down-mixed audio=] for CL #i SHALL comply with the result by the
 - Top de-mixers
 	- <dfn noexport>TF2toT2 de-mixer</dfn>: Ltf2 = Ltf3 – w(k) x (L3 – L5) and Rtf2 = Rtf3 – w(k) x (R3 – R5)
 	- <dfn noexport>T2to4 de-mixer</dfn>: Ltb = 1/γ(k) x (Ltf2 – Ltf4) and Rtb = 1/γ(k) x (Rtf2 – Rtf4)
-- Where, Ltf2 and Rtf2 are top channels of x.1.2ch, Ltf3 and Rtf3 are top channels of 3.1.2ch, and Ltf4 and Rtf4 are top channels of x.1.4ch (x = 5 or 7) and [=w(k)=] is determined from the value of wIdx(k).
+- Where, Ltf2 and Rtf2 are the top channels of x.1.2ch, Ltf3 and Rtf3 are the top channels of 3.1.2ch, and Ltf4 and Rtf4 are the top channels of x.1.4ch (x = 5 or 7) and [=w(k)=] is determined from the value of wIdx(k).
 
 Initially, wIdx(0) = 0 and the value of wIdx(k) SHALL be derived as follows:
 - <dfn noexport>wIdx(k)</dfn> = Clip3(0, 10, wIdx(k-1) + w_idx_offset(k))