fix: impure config reloading (#223)

* fix: impure config reloading

* chore(doc): auto generate docs

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: xiaoshihou514

doc/guard.nvim.txt

@@ -1,4 +1,4 @@
-*guard.nvim.txt*          For NVIM v0.8.0          Last change: 2025 August 24
+*guard.nvim.txt*          For NVIM v0.8.0         Last change: 2025 October 11
 
 ==============================================================================
 Table of Contents                               *guard.nvim-table-of-contents*

lua/guard/format.lua

@@ -150,7 +150,7 @@ local function do_fmt(buf)
       if config.fn then
         return config.fn(buf, range, acc)
       else
-        local result = spawn.transform(util.get_cmd(config, fname, buf), cwd, config, acc)
+        local result = spawn.transform(util.get_cmd(config, fname), cwd, config, acc)
         if type(result) == 'table' then
           -- indicates error
           errno = result
@@ -193,36 +193,36 @@ local function do_fmt(buf)
     -- wait until substitution is finished
     coroutine.yield()
 
-    impure:each(function(config)
-      if errno then
-        return
-      end
-
-      vim.system(util.get_cmd(config, fname, buf), {
-        text = true,
-        cwd = cwd,
-        env = config.env or {},
-      }, function(result)
-        if result.code ~= 0 and #result.stderr > 0 then
-          errno = result
-          ---@diagnostic disable-next-line: inject-field
-          errno.cmd = config.cmd
-          coroutine.resume(co)
-        else
-          coroutine.resume(co)
+    if impure and #impure:totable() > 0 then
+      impure:each(function(config)
+        if errno then
+          return
         end
-      end)
 
-      coroutine.yield()
-    end)
+        vim.system(util.get_cmd(config, fname), {
+          text = true,
+          cwd = cwd,
+          env = config.env or {},
+        }, function(result)
+          if result.code ~= 0 and #result.stderr > 0 then
+            errno = result
+            ---@diagnostic disable-next-line: inject-field
+            errno.cmd = config.cmd
+            coroutine.resume(co)
+          else
+            coroutine.resume(co)
+          end
+        end)
 
-    if errno then
-      fail(('%s exited with code %d\n%s'):format(errno.cmd, errno.code, errno.stderr))
-      return
-    end
+        coroutine.yield()
+      end)
 
-    -- refresh buffer
-    if impure and #impure:totable() > 0 then
+      if errno then
+        fail(('%s exited with code %d\n%s'):format(errno.cmd, errno.code, errno.stderr))
+        return
+      end
+
+      -- refresh buffer
       vim.schedule(function()
         api.nvim_buf_call(buf, function()
           local views = save_views(buf)