mm/huge_memory.c: fixup grammar in comment

This patch fixes up some grammar and spelling in the information block for
huge_memory.c.

Signed-off-by: Michael DeGuzis <mdeguzis@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

mm/huge_memory.c

@@ -39,10 +39,10 @@
 #include "internal.h"
 
 /*
- * By default transparent hugepage support is disabled in order that avoid
- * to risk increase the memory footprint of applications without a guaranteed
- * benefit. When transparent hugepage support is enabled, is for all mappings,
- * and khugepaged scans all mappings.
+ * By default, transparent hugepage support is disabled in order to avoid
+ * risking an increased memory footprint for applications that are not
+ * guaranteed to benefit from it. When transparent hugepage support is
+ * enabled, it is for all mappings, and khugepaged scans all mappings.
  * Defrag is invoked by khugepaged hugepage allocations and by page faults
  * for all hugepage allocations.
  */