Documentation: Fix power typos

Fix typos.

Signed-off-by: Bjorn Helgaas <[e-mail]>
Reviewed-by: Randy Dunlap <[e-mail]>
Signed-off-by: Jonathan Corbet <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

Documentation/power/pci.rst

···
 The pci_pm_suspend_noirq() routine is executed after suspend_device_irqs() has
 been called, which means that the device driver's interrupt handler won't be
 invoked while this routine is running.  It first checks if the device's driver
-implements legacy PCI suspends routines (Section 3), in which case the legacy
+implements legacy PCI suspend routines (Section 3), in which case the legacy
 late suspend routine is called and its result is returned (the standard
 configuration registers of the device are saved if the driver's callback hasn't
 done that).  Second, if the device driver's struct dev_pm_ops object is not
···
 The resume phase is carried out asynchronously for PCI devices, like the
 suspend phase described above, which means that if two PCI devices don't depend
 on each other in a known way, the pci_pm_resume() routine may be executed for
-the both of them in parallel.
+both of them in parallel.
 
 The pci_pm_complete() routine only executes the device driver's pm->complete()
 callback, if defined.

Documentation/power/suspend-and-cpuhotplug.rst

···
 
 Well, a picture is worth a thousand words... So ASCII art follows :-)
 
-[This depicts the current design in the kernel, and focusses only on the
+[This depicts the current design in the kernel, and focuses only on the
 interactions involving the freezer and CPU hotplug and also tries to explain
 the locking involved. It outlines the notifications involved as well.
 But please note that here, only the call paths are illustrated, with the aim