staging: rtl8188eu: fix spelling mistake in comment

Fix a spelling mistake reported by checkpatch.
Caculate -> Calculate
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/hal/odm_rtl8188e.c

@@ -272,7 +272,7 @@ static void rtl88eu_dm_hw_ant_div(struct odm_dm_struct *dm_odm)
 	for (i = 0; i < ODM_ASSOCIATE_ENTRY_NUM; i++) {
 		entry = dm_odm->pODM_StaInfo[i];
 		if (IS_STA_VALID(entry)) {
-			/* 2 Caculate RSSI per Antenna */
+			/* 2 Calculate RSSI per Antenna */
 			main_rssi = (dm_fat_tbl->MainAnt_Cnt[i] != 0) ?
 				     (dm_fat_tbl->MainAnt_Sum[i]/dm_fat_tbl->MainAnt_Cnt[i]) : 0;
 			aux_rssi = (dm_fat_tbl->AuxAnt_Cnt[i] != 0) ?