Add cross-reference

Author: Susan Vanderplas

part-tools/02-setting-up-computer.qmd

@@ -115,7 +115,9 @@ If you want to be safe, go ahead and complete these steps as well.
 
 5.  Install git using the instructions [here](https://happygitwithr.com/install-git.html).
     Consult the [troubleshooting guide](https://happygitwithr.com/troubleshooting.html) if you have issues.
-    If that fails, then seek help in office hours.
+    If that fails, then seek help in office hours.    
+    
+    We will configure git later, in @sec-git. For now, let's just get it installed. 
 
 6.  Install LaTeX, rmarkdown, and quarto: