chore(docs): auto generate docs

Author: neo451

doc/obsidian.txt

@@ -624,11 +624,11 @@ carefully and customize it to your needs:
         -- You can always override this per image by passing a full path to the command instead of just a filename.
         img_folder = "assets/imgs",  -- This is the default
 
-        -- Optional, customize the default name or prefix when pasting images via `:ObsidianPasteImg`.
+        -- A function that determines default name or prefix when pasting images via `:ObsidianPasteImg`.
         ---@return string
         img_name_func = function()
           -- Prefix image names with timestamp.
-          return string.format("%s-", os.time())
+          return string.format("Pasted image %s", os.date "%Y%m%d%H%M%S")
         end,
 
         -- A function that determines the text to insert in the note when pasting an image.