Docs: MSI-HOWTO: API -> function

Signed-off-by: Michael Witten <mfwitten@gmail.com>
Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
diff --git a/Documentation/PCI/MSI-HOWTO.txt b/Documentation/PCI/MSI-HOWTO.txt
index f533bc2..d9c8d98 100644
--- a/Documentation/PCI/MSI-HOWTO.txt
+++ b/Documentation/PCI/MSI-HOWTO.txt
@@ -211,7 +211,7 @@
 
 void pci_disable_msix(struct pci_dev *dev)
 
-This API should be used to undo the effect of pci_enable_msix().  It frees
+This function should be used to undo the effect of pci_enable_msix().  It frees
 the previously allocated message signaled interrupts.  The interrupts may
 subsequently be assigned to another device, so drivers should not cache
 the value of the 'vector' elements over a call to pci_disable_msix().