remove a stray reference to asm/uaccess.h in docs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

Documentation/DocBook/kernel-hacking.tmpl

@@ -483,7 +483,7 @@ printk(KERN_INFO "my ip: %pI4\n", &ipaddress);
     <function>get_user()</function>
     /
     <function>put_user()</function>
-    <filename class="headerfile">include/asm/uaccess.h</filename>
+    <filename class="headerfile">include/linux/uaccess.h</filename>
    </title>  
 
    <para>