Update online file installation instructions in using-dumpling.md (#33)

docs/using-dumpling.md

@@ -76,8 +76,8 @@ This can be installed like any other game dump in the next section.
 
 1. Exit the Dumpling app and turn off your Wii U
 1. Take your USB storage device or SD card out of your Wii U and put it in your PC
-1. Copy `otp.bin` and `seeprom.bin` from the `/dumpling/Online Files` folder to your Cemu directory
-    - This is where `Cemu.exe` is located
+1. Launch Cemu, then click on File -> Open Cemu Folder
+1. Copy `otp.bin` and `seeprom.bin` from the `/dumpling/Online Files` folder to your Cemu folder
 1. Copy the `sys` and `usr` folders from `/dumpling/Online Files/mlc01` on your SD/USB device to the `mlc01` folder
     - By default, the `mlc01` folder is located in the Cemu folder
     - If you are unsure where it is, check in `Options` -> `General settings` under "MLC Path"