chore(build): auto-generate vimdoc

doc/lazy.nvim.txt

@@ -389,6 +389,9 @@ CONFIGURATION                                        *lazy.nvim-configuration*
             "‒",
           },
         },
+        -- leave nil, to automatically select a browser depending on your OS.
+        -- If you want to use a specific browser, you can define it here
+        browser = nil, ---@type string?
         throttle = 20, -- how frequently should the ui process render events
         custom_keys = {
           -- you can define custom key maps here.