chore(build): auto-generate vimdoc

doc/spellwarn.txt

@@ -58,14 +58,14 @@ Pass any of the following options to `require("spellwarn").setup()`
             "TextChangedP",
             "TextChangedT",
         },
-        ft_config = { -- spellcheck method: "cursor", "iter", "treesitter", or boolean
+        ft_config = { -- spellcheck method: "cursor", "iter", or boolean
             alpha   = false,
             help    = false,
             lazy    = false,
             lspinfo = false,
             mason   = false,
         },
-        ft_default = true, -- whether to enable or disable for all filetypes by default
+        ft_default = true, -- default option for unspecified filetypes
         max_file_size = nil, -- maximum file size to check in lines (nil for no limit)
         severity = { -- severity for each spelling error type (false to disable diagnostics for that type)
             spellbad   = "WARN",
@@ -83,9 +83,9 @@ false }` will mean that `alpha`, `mason`, etc. are set to true) but that
 `spellcap` to be nil. You can pass any of `cursor`, `iter`, `treesitter`,
 `false`, or `true` as options to `ft_config`. The default method is `cursor`,
 which iterates through the buffer with `]s`. There is also `iter`, which uses
-the Lua API, and `treesitter`, which uses the Lua API and Treesitter (and falls
-back on `iter` if Treesitter is unavailable). Finally, `false` disables
-Spellwarn for that filetype and `true` uses the default (`cursor`).
+Treesitter (if available) and the Lua API. Finally, `false` disables Spellwarn
+for that filetype and `true` uses the default (`cursor`). _Note: iter doesn’t
+show spellcap errors, but works well other than that. I recommend it._
 
 
 USAGE                                         *spellwarn-spellwarn.nvim-usage*