fixed output from wrong sum to correct (#5123)

SuperCool83 · mairaw · commit 9481ba482a37 · 2018-05-02T11:41:24.000-07:00
diff --git a/docs/fsharp/tutorials/fsharp-interactive/index.md b/docs/fsharp/tutorials/fsharp-interactive/index.md
@@ -83,7 +83,7 @@ The output is as follows:
 Command line arguments: 
 file1.fsx
 test
-60
+90
 ```
 
 ## Related Topics
