patch to fix small grammar error

[Justin Keller]

Hello,
I have a small patch to the memory-hotplug documentation. One line
adds a comma, and the other line adds an and.

Justin Keller

--- Documentation/memory-hotplug.txt.orig 2016-02-11 11:21:22.000000000 -0500

+++ Documentation/memory-hotplug.txt 2016-02-11 11:23:08.000000000 -0500

@@ -88,9 +88,9 @@



 1.3. Unit of Memory online/offline operation

 ------------

-Memory hotplug uses SPARSEMEM memory model which allows memory to be divided

+Memory hotplug uses SPARSEMEM memory model, which allows memory to be divided

 into chunks of the same size. These chunks are called "sections". The size of

-a memory section is architecture dependent. For example, power uses 16MiB, ia64

+a memory section is architecture dependent. For example, power uses
16MiB and ia64

 uses 1GiB.



 Memory sections are combined into chunks referred to as "memory blocks". The