patch 8.2.2160: various typos

Problem:    Various typos.
Solution:   Fix spelling mistakes. (closes #7494)
diff --git a/src/testdir/test_terminal2.vim b/src/testdir/test_terminal2.vim
index 64310f6..4dc8350 100644
--- a/src/testdir/test_terminal2.vim
+++ b/src/testdir/test_terminal2.vim
@@ -287,7 +287,7 @@
   unlet g:job
 endfunc
 
-" TODO: reenable when this no longer hangs on Travis
+" TODO: re-enable when this no longer hangs on Travis
 "func Test_zz2_terminal_guioptions_bang()
 "  CheckGui
 "  set guioptions+=!
@@ -338,7 +338,7 @@
   let bnr = bufnr('$')
   call WaitForAssert({-> assert_equal('running', term_getstatus(bnr))})
   " In the GUI the first switch sometimes doesn't work.  Switch twice to avoid
-  " flakyness.
+  " flakiness.
   call feedkeys("\<C-W>N", 'xt')
   call feedkeys("A", 'xt')
   call WaitForAssert({-> assert_equal('running', term_getstatus(bnr))})