Link FAHW.pdf in Notes page

Author: MatrixCQY

_pages/notes.md

@@ -9,11 +9,7 @@ author_profile: true
 [https://matrixcqy.github.io/bbblog/](https://matrixcqy.github.io/bbblog/)
 
 ## PDF Notes
-[📂 Read PDF Online (Example)](/pdf-viewer/?file=/files/example.pdf)
-
-> **Instructions**: To add your own PDF:
-> 1. Upload your PDF file to the `files/` folder in this repository.
-> 2. Copy the link format above: `/pdf-viewer/?file=/files/YOUR_FILENAME.pdf`
+- [📄 FAHW Note](/pdf-viewer/?file=/files/FAHW.pdf)
 
 {% include base_path %}
 {% for post in site.posts %}