Documentation/vm/transhuge.txt: fix trivial typos

[akpm@linux-foundation.org: fixes per Randy]
Link: http://lkml.kernel.org/r/20170405210259.2067-1-sj38.park@gmail.comSigned-off-by: SeongJae Park <sj38.park@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Documentation/vm/transhuge.txt

@@ -292,7 +292,7 @@ thp_collapse_alloc_failed is incremented if khugepaged found a range
 	the allocation.
 
 thp_file_alloc is incremented every time a file huge page is successfully
-i	allocated.
+	allocated.
 
 thp_file_mapped is incremented every time a file huge page is mapped into
 	user address space.
@@ -519,8 +519,8 @@ comes. Splitting will free up unused subpages.
 
 Splitting the page right away is not an option due to locking context in
 the place where we can detect partial unmap. It's also might be
-counterproductive since in many cases partial unmap unmap happens during
-exit(2) if an THP crosses VMA boundary.
+counterproductive since in many cases partial unmap happens during exit(2) if
+a THP crosses a VMA boundary.
 
 Function deferred_split_huge_page() is used to queue page for splitting.
 The splitting itself will happen when we get memory pressure via shrinker