fix build command for forked repo

README.md

@@ -320,7 +320,7 @@ If you fork the RaspiBlitz repo (much welcome) and you want to run that code on
 
 * The long way: If you like to install/remove/change services and system configurations you need to build a SD card from your own code. Prepare like in `Build the SD Card Image` but in the end run the command:
 
-`wget https://raw.githubusercontent.com/[GITHUB-USERNAME]/raspiblitz/dev/build.sdcard/raspbianStretchDesktop.sh && sudo bash raspbianStretchDesktop.sh [BRANCH] [GITHUB-USERNAME]`
+`wget https://raw.githubusercontent.com/[GITHUB-USERNAME]/raspiblitz/[BRANCH]/build.sdcard/raspbianStretchDesktop.sh && sudo bash raspbianStretchDesktop.sh [BRANCH] [GITHUB-USERNAME]`
 
 ## Update to a new SD Card Release