Documentation: PCI: correct spelling

Correct spelling problems for Documentation/PCI/ as reported
by codespell.

Link: https://lore.kernel.org/linux-pci/20230209071400.31476-14-rdunlap@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>

Documentation/PCI/endpoint/pci-vntb-howto.rst

@@ -103,7 +103,7 @@ A sample configuration for NTB function is given below::
 	# echo 1 > functions/pci_epf_vntb/func1/pci_epf_vntb.0/num_mws
 	# echo 0x100000 > functions/pci_epf_vntb/func1/pci_epf_vntb.0/mw1
 
-A sample configuration for virtual NTB driver for virutal PCI bus::
+A sample configuration for virtual NTB driver for virtual PCI bus::
 
 	# echo 0x1957 > functions/pci_epf_vntb/func1/pci_epf_vntb.0/vntb_vid
 	# echo 0x080A > functions/pci_epf_vntb/func1/pci_epf_vntb.0/vntb_pid

Documentation/PCI/msi-howto.rst

@@ -290,7 +290,7 @@ PCI_IRQ_MSI or PCI_IRQ_MSIX flags.
 List of device drivers MSI(-X) APIs
 ===================================
 
-The PCI/MSI subystem has a dedicated C file for its exported device driver
+The PCI/MSI subsystem has a dedicated C file for its exported device driver
 APIs — `drivers/pci/msi/api.c`. The following functions are exported:
 
 .. kernel-doc:: drivers/pci/msi/api.c