docs: clarify protocol usage (#1426)

Co-authored-by: Jessica Schilling <jessica@protocol.ai>

README.md

@@ -40,7 +40,11 @@ IPFS Desktop's main feature is to allow you to have the IPFS daemon always runni
 
 ### Handle `ipfs://`, `ipns://` and `dweb:` links
 
-If you come across a link to any of the protocols above, IPFS Desktop will be able to open them and redirect them to your default browser.
+IPFS Desktop has the capacity to handle protocols at the operating system level; i.e., if an application tries to open a link to either `ipfs://`, `ipns://` or `dweb:`, then the OS will call IPFS Desktop, which will handle the link.
+
+For example, if you come across a link on the Internet whose `href` attribute is `ipns://ipfs.io`, then IPFS Desktop will be able to handle it.
+
+On Windows, an easy way to open a link would be to open the Run window (Win+R), paste the link, and hit Enter. Then, IPFS Desktop handles the rest. The same happens if you try opening the same link in a browser.
 
 ### Adds `ipfs` to your system