mm: fix CROSS_MEMORY_ATTACH help text grammar

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/init/Kconfig b/init/Kconfig
index 44f9ed3..e84c642 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -268,7 +268,7 @@
 	help
 	  Enabling this option adds the system calls process_vm_readv and
 	  process_vm_writev which allow a process with the correct privileges
-	  to directly read from or write to to another process's address space.
+	  to directly read from or write to another process' address space.
 	  See the man page for more details.
 
 config FHANDLE