docbook/kernel-api: include files updated

Path to pci_hotplug_core corrected.
Added !Eli/string.h to document strlcpy and friends

Documentation/DocBook/kernel-api.tmpl

@@ -79,6 +79,7 @@ KAO -->
      </sect1>
      <sect1><title>String Manipulation</title>
 !Ilib/string.c
+!Elib/string.c
      </sect1>
      <sect1><title>Bit Operations</title>
 !Iinclude/asm-i386/bitops.h
@@ -176,7 +177,7 @@ X!Ekernel/module.c
 !Edrivers/pci/pci.c
      </sect1>
      <sect1><title>PCI Hotplug Support Library</title>
-!Edrivers/hotplug/pci_hotplug_core.c
+!Edrivers/pci/hotplug/pci_hotplug_core.c
      </sect1>
      <sect1><title>MCA Architecture</title>
 	<sect2><title>MCA Device Functions</title>