docs(readme): use raw GitHub URL for logo image

Author: CalvinAllen

README.md

@@ -1,5 +1,5 @@
 <p align="center">
-  <img src="resources/logo.png" alt="Open in Notepad++ Logo" width="128" height="128">
+  <img src="https://raw.githubusercontent.com/CodingWithCalvin/VS-OpenInNotepadPlusPlus/main/resources/logo.png" alt="Open in Notepad++ Logo" width="128" height="128">
 </p>
 
 <h1 align="center">Open in Notepad++</h1>