Fix comments style

README.md

@@ -282,13 +282,13 @@ require('spectre.actions').get_state()
 -- write your custom open function
 require('spectre').open({
   is_insert_mode = true,
-  -- the directory where the search tool will be started in.
+  -- the directory where the search tool will be started in
   cwd = "~/.config/nvim",
   search_text="test",
   replace_text="test",
-  -- the pattern of files to consider for searching.
+  -- the pattern of files to consider for searching
   path="lua/**/*.lua",
-  -- the directories or files to search in.
+  -- the directories or files to search in
   search_paths = {"lua/", "plugin/"},
   is_close = false, -- close an exists instance of spectre and open new
 })