Update the 'kernel parameter' link address

The old address is outdated, it is updated by the new one.

LINKS.md

@@ -5,7 +5,7 @@ Linux boot
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 * [Linux/x86 boot protocol](https://www.kernel.org/doc/Documentation/x86/boot.txt)
-* [Linux kernel parameters](https://github.com/torvalds/linux/blob/master/Documentation/kernel-parameters.txt)
+* [Linux kernel parameters](https://github.com/torvalds/linux/blob/master/Documentation/admin-guide/kernel-parameters.rst)
 
 Protected mode
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