fix(summary): escape ws_root special characters

[git-girl]

hey there :)

i was just trying to debug the links in the summary module not being generated properly.
the issue is that the links are generated as ones relative to current workspace root
( the format of :$/path/from/current/workspace:).
however the actuals paths post gsub remain full paths.
for debugging i modified the module.lua like so:

local norgname = filename:match("(.+)%.norg$") -- strip extension for link destinations
vim.print("looking at file: " .. filename)
if not norgname then
    -- NOTE: either here
    vim.print("DEBUG: treated it as a non norg file")
    norgname = filename
end
-- NOTE: or here
norgname = norgname:gsub("^" .. ws_root, "")
vim.print("post gsub: " .. norgname )

and that gave me this:

   looking at file: /home/cherry-cat/Notes/General/index.norg
   post gsub: /home/cherry-cat/Notes/General/index
   looking at file: /home/cherry-cat/Notes/General/coding/debugging_neorg_auto_cats.norg
   post gsub: /home/cherry-cat/Notes/General/coding/debugging_neorg_auto_cats
   looking at file: /home/cherry-cat/Notes/General/coding/debugging_neorg_telescope.norg
   post gsub: /home/cherry-cat/Notes/General/coding/debugging_neorg_telescope
   looking at file: /home/cherry-cat/Notes/General/coding/debugging_telescope_cc_dressing.norg
   post gsub: /home/cherry-cat/Notes/General/coding/debugging_telescope_cc_dressing
   looking at file: /home/cherry-cat/Notes/General/coding/factory_pattern.norg
   post gsub: /home/cherry-cat/Notes/General/coding/factory_pattern

and so on for every file. \
with ws_root being: /home/cherry-cat/Notes/General \

i figured out that the issue lies in the special character
in my user name not being escaped (._.)

so i added this bit here before the norgname

local escaped_ws_root = ws_root:gsub("([%(%)%.%%%+%-%*%?%[%^%$%]])", "%%%1")
norgname = string.gsub(norgname,"^" .. escaped_ws_root, "")

i am legit the worst at regex. and idk if these characters can even be part of a path so probably it's good if someone reads this regex.

sorry also for not opening an issue i guess. i thought maybe this is ok because its just 2 lines that are changed pretty straight forwardly.

best regards 👋

[NTBBloodbath]

LGTM, thank you so much for this patch!