Provide original context when DMing delete link for attachment paste upload (#3432)

Author: DragonSenseiGuy

bot/exts/utils/attachment_pastebin_uploader.py

@@ -128,7 +128,10 @@ async def on_message(self, message: discord.Message) -> None:
         # Send the user a DM with the delete link for the paste.
         # The angle brackets around the remove link are required to stop Discord from visiting the URL to produce a
         # preview, thereby deleting the paste
-        await message.author.send(content=f"[Click here](<{paste_response.removal}>) to delete your recent paste.")
+        await message.author.send(
+            f"[Click here](<{paste_response.removal}>) to delete the pasted attachment"
+            f" contents copied from [your message](<{message.jump_url}>)"
+        )
 
         # Edit the bot message to contain the link to the paste.
         await bot_reply.edit(content=f"[Click here]({paste_response.link}) to see this code in our pastebin.")