docs: update README for clarity on project synchronization

- Revised the README to clarify the synchronization between the GitHub repository and the Telegraph page, enhancing user understanding.

Author: cyanxiao

README.md

@@ -1,6 +1,6 @@
 # Markdown to Telegraph Action
 
-This README itself is a demo for this action. The [Project GitHub Repo](https://github.com/cyanxiao/md-to-telegraph-action) is in sync with the [Telegraph Page](https://telegra.ph/Markdown-to-Telegraph-Action-08-23).
+This README itself is a demo for this action. The [Project GitHub Repo](https://github.com/cyanxiao/md-to-telegraph-action) is in sync with the Telegraph Page in repo link property.
 
 `md-to-telegraph-action` is a GitHub action that automatically converts markdown files in your repository to pages on [Telegraph](https://telegra.ph/). It is a convenient way to host your documentation on [Telegraph](https://telegra.ph/) without the hassle of setting up a server.