Adjust the kernel version format

Change-Id: Ic429ba66875ecab25e5cbb5c5cb2607936a67139
Signed-off-by: Yong Li <yong.b.li@linux.intel.com>
diff --git a/cheatsheet.md b/cheatsheet.md
index 4faeeff..d8cd3fc 100644
--- a/cheatsheet.md
+++ b/cheatsheet.md
@@ -9,7 +9,7 @@
 The kernel recipe is in:
 
 ```
- meta-phosphor/common/recipes-kernel/linux/linux-obmc_4.2.bb
+ meta-phosphor/common/recipes-kernel/linux/linux-obmc_X.Y.bb
 ```
 
 To use a local git tree, change the `SRC_URI` to a git:// URL without