shell/Readme.md: use explicit URL (with https://)

diff --git a/shell/Readme.md b/shell/Readme.md
index 2f9555931dcbe1123eea97b400388e07403682e3..1dee416ea61714f467b5665cda0e803e0012335b 100644 (file)
--- a/shell/Readme.md
+++ b/shell/Readme.md
@@ -11,7 +11,7 @@ with a keyboard instead of controlling graphical user interfaces
 
 Use the GUI to open the tutorial on github.  Single click on the "Firefox 
 Web Browser".  Type in the URL:
-    github.com/USERNAME/boot-camps/tree/YYYY-MM-PLACE
+    https://github.com/USERNAME/boot-camps/tree/YYYY-MM-PLACE
 
 Click on the directory named `shell`.