Add usage for normalizePath.md

docs/api/functions/normalizePath.md

@@ -4,6 +4,9 @@
 export function normalizePath(path: string): string;
 ```
 
+Make sure that the file path is normalized, so that it works on all operating systems, so that other functions (like [`getResourcePath()`](https://marcus.se.net/obsidian-plugin-docs/api/interfaces/DataAdapter#getresourcepath) can work). Mac/Linux and Windows have different styles for that. 
+
+
 ## Parameters
 
 | Parameter | Description |