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: 6ba495e925 ("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>

fs/ext4/Kconfig

@@ -112,7 +112,7 @@ config EXT4_FS_ENCRYPTION
 	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.