Standardize on lowercase Tilemap and Attrmap

We used to have a mixture of TileMap and and Tilemap, as well as the
similar AttrMap. Standardize on one.

engine/pokedex/new_pokedex_entry.asm

@@ -5,7 +5,7 @@ NewPokedexEntry:
 	ldh [hMapAnims], a
 	call LowVolume
 	call ClearBGPalettes
-	call ClearTileMap
+	call ClearTilemap
 	call UpdateSprites
 	call ClearSprites
 	ld a, [wPokedexStatus]
@@ -34,7 +34,7 @@ NewPokedexEntry:
 	ret
 
 .ReturnFromDexRegistration:
-	call ClearTileMap
+	call ClearTilemap
 	call LoadFontsExtra
 	call LoadStandardFont
 	farcall Pokedex_PlaceFrontpicTopLeftCorner

engine/pokedex/pokedex.asm

@@ -79,7 +79,7 @@ Pokedex:
 InitPokedex:
 	call ClearBGPalettes
 	call ClearSprites
-	call ClearTileMap
+	call ClearTilemap
 	call Pokedex_LoadGFX
 
 	ld hl, wPokedexDataStart
@@ -219,7 +219,7 @@ Pokedex_InitMainScreen:
 	ldh [hBGMapMode], a
 	call ClearSprites
 	xor a
-	hlcoord 0, 0, wAttrMap
+	hlcoord 0, 0, wAttrmap
 	ld bc, SCREEN_HEIGHT * SCREEN_WIDTH
 	call ByteFill
 	farcall DrawPokedexListWindow
@@ -718,7 +718,7 @@ Pokedex_InitSearchResultsScreen:
 	xor a
 	ldh [hBGMapMode], a
 	xor a
-	hlcoord 0, 0, wAttrMap
+	hlcoord 0, 0, wAttrmap
 	ld bc, SCREEN_WIDTH * SCREEN_HEIGHT
 	call ByteFill
 	call Pokedex_SetBGMapMode4

engine/pokedex/pokedex_3.asm

@@ -140,7 +140,7 @@ DrawDexEntryScreenRightEdge:
 	ld [hl], $3c
 	xor a
 	ld b, SCREEN_HEIGHT
-	hlcoord 19, 0, wAttrMap
+	hlcoord 19, 0, wAttrmap
 	call Bank77_FillColumn
 	call WaitBGMap2
 	pop hl