selftests/memfd: fix spelling mistakes

Fix spelling mistakes in the comments.

Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Saurav Shah <[e-mail]>
Cc: Aleksa Sarai <[e-mail]>
Cc: Greg Thelen <[e-mail]>
Cc: Jeff Xu <[e-mail]>
Cc: Shuah Khan <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>

tools/testing/selftests/memfd/fuse_test.c

···
 	 * then the kernel did a page-replacement or canceled the read() (or
 	 * whatever magic it did..). In that case, the memfd object is still
 	 * all zero.
-	 * In case the memfd-object was *not* sealed, the read() was successfull
+	 * In case the memfd-object was *not* sealed, the read() was successful
 	 * and the memfd object must *not* be all zero.
 	 * Note that in real scenarios, there might be a mixture of both, but
 	 * in this test-cases, we have explicit 200ms delays which should be

tools/testing/selftests/memfd/memfd_test.c

···
 
 /*
  * Test sharing via fork()
- * Test whether seal-modifications work as expected with forked childs.
+ * Test whether seal-modifications work as expected with forked children.
  */
 static void test_share_fork(char *banner, char *b_suffix)
 {