Added the Linux kernel coding style link.

Author: janpgit

docs/cstyle.html

@@ -68,6 +68,10 @@
 href="https://man.openbsd.org/style">style(9)</a> manual page for more
 information.
 
+<p>There is also the <a
+href="https://www.kernel.org/doc/html/v4.10/process/coding-style.html">Linux
+kernel coding style</a>.
+
 </p><p></p><hr>
 Last changed:
 <script>