vim-patch:d82c918: runtime(doc): Improve doc for cmdline-autocomplete (#35235)

Maybe this was unnecessary, but saw this:
https://github.com/vim/vim/issues/17854

d82c918e2f

Co-authored-by: Girish Palya <girishji@gmail.com>

src/nvim/eval.lua

@@ -13102,6 +13102,11 @@ M.funcs = {
       	cnoremap <Up>   <C-U><Up>
       	cnoremap <Down> <C-U><Down>
       <
+      To set an option specifically when performing a search, e.g.
+      to set 'pumheight': >vim
+      	autocmd CmdlineEnter [/\?] set pumheight=8
+      	autocmd CmdlineLeave [/\?] set pumheight&
+      <
       Return value is always 0.
     ]==],
     name = 'wildtrigger',