patch 8.0.1694: terminal API test is a bit flaky

Problem:    Terminal API test is a bit flaky.
Solution:   Wait longer for Vim to stop.

src/testdir/screendump.vim

@@ -70,7 +70,7 @@ endfunc
 func StopVimInTerminal(buf)
   call assert_equal("running", term_getstatus(a:buf))
   call term_sendkeys(a:buf, "\<Esc>\<Esc>:qa!\<cr>")
-  call WaitFor('term_getstatus(' . a:buf . ') == "finished"')
+  call WaitFor('term_getstatus(' . a:buf . ') == "finished"', 3000)
   only!
 endfunc
 

src/version.c

@@ -762,6 +762,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1694,
 /**/
     1693,
 /**/