Pkmn -> Mon

Since we're aiming for consistency across the codebase, I believe it
includes a uniform way to refer to the creatures this game consists of
in the labels of the code.
The only exceptions to this rule are labels referring to things named
through the use of the <PK><MN> or <PKMN> characters, in which case PKMN
is used.

Most of this was already consistent enough™, I just picked the
convention with the most occurences and fixed the outliers.

mobile/mobile_46.asm

@@ -7146,7 +7146,7 @@ Function11b483: ; 11b483
 	pop de
 	push de
 	ld b, OTPARTYMON
-	predef CalcPkmnStats
+	predef CalcMonStats
 	pop de
 	ld h, d
 	ld l, e
@@ -7565,7 +7565,7 @@ Function11b6b4: ; 11b6b4
 	ld hl, $c60d + MON_STAT_EXP - 1
 	ld de, $c60d + MON_MAXHP
 	ld b, $1
-	predef CalcPkmnStats
+	predef CalcMonStats
 	ld de, $c60d + MON_MAXHP
 	ld hl, $c60d + MON_HP
 	ld a, [de]

mobile/mobile_5c.asm

@@ -220,7 +220,7 @@ Function170c8b: ; 170c8b
 
 CheckBTMonMovesForErrors: ; 170c98
 	ld c, BATTLETOWER_PARTY_LENGTH
-	ld hl, wBT_OTTempPkmn1Moves
+	ld hl, wBT_OTTempMon1Moves
 .loop
 	push hl
 	ld a, [hl]

mobile/mobile_5f.asm

@@ -2442,7 +2442,7 @@ Function17ded9: ; 17ded9
 	ld e, l
 	push hl
 	ld b, $0
-	farcall CalcPkmnStats
+	farcall CalcMonStats
 	ld a, [wPartyCount]
 	dec a
 	ld hl, wPartyMon1HP
@@ -2531,7 +2531,7 @@ Function17e026: ; 17e026
 	push bc
 	push hl
 	farcall LoadEnemyMon
-	farcall SendPkmnIntoBox
+	farcall SendMonIntoBox
 	farcall SetBoxMonCaughtData
 	pop hl
 	pop bc