ext4: Change debugging support help prefix from EXT4 to Ext4

All other configuration options for the ext* family of file systems use
"Ext%u" instead of "EXT%u".

Fixes: 6ba495e9259cd9a0 ("ext4: Add configurable run-time mballoc debugging")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
diff --git a/fs/ext4/Kconfig b/fs/ext4/Kconfig
index a453cc8..112b475 100644
--- a/fs/ext4/Kconfig
+++ b/fs/ext4/Kconfig
@@ -112,7 +112,7 @@
 	depends on EXT4_ENCRYPTION
 
 config EXT4_DEBUG
-	bool "EXT4 debugging support"
+	bool "Ext4 debugging support"
 	depends on EXT4_FS
 	help
 	  Enables run-time debugging support for the ext4 filesystem.