f2fs: fix disable_ext_identify option spelling

There is a typo in the ->show_options function for disable_ext_identify.
Fix it to match the spelling from the documentation.
Signed-off-by: Alejandro Martinez Ruiz <alex@nowcomputing.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

fs/f2fs/super.c

@@ -198,7 +198,7 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
 		seq_puts(seq, ",noacl");
 #endif
 	if (test_opt(sbi, DISABLE_EXT_IDENTIFY))
-		seq_puts(seq, ",disable_ext_indentify");
+		seq_puts(seq, ",disable_ext_identify");
 
 	seq_printf(seq, ",active_logs=%u", sbi->active_logs);