patch 8.2.5131: timeout implementation is not optimal

Problem:    Timeout implementation is not optimal.
Solution:   Further improvements for timeouts.  Add a test for searchpair()
            timeout. (partly by Paul Ollis)
diff --git a/src/testdir/test_hlsearch.vim b/src/testdir/test_hlsearch.vim
index ed50145..4227dbd 100644
--- a/src/testdir/test_hlsearch.vim
+++ b/src/testdir/test_hlsearch.vim
@@ -37,7 +37,7 @@
 func Test_hlsearch_hangs()
   CheckFunction reltimefloat
 
-  " So, it turns out the Windows 7 implements TimerQueue timers differently
+  " So, it turns out that Windows 7 implements TimerQueue timers differently
   " and they can expire *before* the requested time has elapsed. So allow for
   " the timeout occurring after 80 ms (5 * 16 (the typical clock tick)).
   if has("win32")