docs: PCI: Fix typos

Fix typos in PCI docs.

Link: https://lore.kernel.org/r/20231223184720.25645-1-tintinm2017@gmail.com
Link: https://lore.kernel.org/r/20231223184412.25598-1-tintinm2017@gmail.com
Signed-off-by: Attreyee Mukherjee <tintinm2017@gmail.com>
[bhelgaas: squashed, commit log]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>  # for "busses" only

Author: attreyee-muk

Documentation/PCI/boot-interrupts.rst

@@ -61,7 +61,7 @@ Conditions
 ==========
 
 The use of threaded interrupts is the most likely condition to trigger
-this problem today. Threaded interrupts may not be reenabled after the IRQ
+this problem today. Threaded interrupts may not be re-enabled after the IRQ
 handler wakes. These "one shot" conditions mean that the threaded interrupt
 needs to keep the interrupt line masked until the threaded handler has run.
 Especially when dealing with high data rate interrupts, the thread needs to

Documentation/PCI/msi-howto.rst

@@ -236,7 +236,7 @@ including a full 'lspci -v' so we can add the quirks to the kernel.
 Disabling MSIs below a bridge
 -----------------------------
 
-Some PCI bridges are not able to route MSIs between busses properly.
+Some PCI bridges are not able to route MSIs between buses properly.
 In this case, MSIs must be disabled on all devices behind the bridge.
 
 Some bridges allow you to enable MSIs by changing some bits in their