userfaultfd.2: tfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
diff --git a/man2/userfaultfd.2 b/man2/userfaultfd.2
index 3ff05af..593c189 100644
--- a/man2/userfaultfd.2
+++ b/man2/userfaultfd.2
@@ -271,7 +271,7 @@
 ioctl with mode
 .B UFFDIO_REGISTER_MODE_WP
 set.
-Note that it's legal to monitor the same memory range with multiple modes.
+Note that it is legal to monitor the same memory range with multiple modes.
 For example, the user can do
 .B UFFDIO_REGISTER
 with the mode set to
@@ -467,8 +467,8 @@
 .B UFFD_PAGEFAULT_FLAG_WP
 If the address is in a range that was registered with the
 .B UFFDIO_REGISTER_MODE_WP
-flag, when this bit is set, it means it's a write-protect fault.
-Otherwise it's a page-missing fault.
+flag, when this bit is set, it means it is a write-protect fault.
+Otherwise it is a page-missing fault.
 .RE
 .TP
 .I pagefault.feat.pid