Fix a misspelling of "maximum"

Change-Id: I4107e3a41735ee995c78e4e8ac26ed2d1fbf8f13

av1/common/enums.h

diff --git a/av1/common/enums.h b/av1/common/enums.h
index ce29b17..b99a138 100644
--- a/av1/common/enums.h
+++ b/av1/common/enums.h
@@ -197,7 +197,7 @@
 #define TX_PAD_END 16
 #define TX_PAD_2D ((32 + TX_PAD_HOR) * (32 + TX_PAD_VER) + TX_PAD_END)
 
-// Number of maxium size transform blocks in the maximum size superblock
+// Number of maximum size transform blocks in the maximum size superblock
 #define MAX_TX_BLOCKS_IN_MAX_SB_LOG2 ((MAX_SB_SIZE_LOG2 - MAX_TX_SIZE_LOG2) * 2)
 #define MAX_TX_BLOCKS_IN_MAX_SB (1 << MAX_TX_BLOCKS_IN_MAX_SB_LOG2)