build(vim-patch): n/a docs for v8.1.2219

Ignoring incompatible implementation,
TerminalOpen and TermOpen events are not 1-1.
"TerminalWinOpen" was accepted as N/A in
commit c7ee6af777 .

I planned to not do this to have more test cases
after manipulating the hunks header to filter out more hunks
but Justin is eager to just mark these N/A
to bump the Vim major.minor version.

Time to move on from v8.1.x.

scripts/vim_na_hunks_vim.txt

@@ -95,6 +95,9 @@
 \*HelpToc-mappings\*
 \*SafeStateAgain\*
 \*SigUSR1\*
+\*TerminalOpen\*
+\*TerminalWinOpen\*
+\*autocommand-events\*
 \*builtin-function-list\*
 \*emacs[_-]tags\*
 \*help-toc-install\*