docs: fix run syntax

jbogarthyde · hansl · commit deadbaf392ed · 2018-11-13T13:09:51.000-08:00
diff --git a/packages/angular/cli/commands/run-long.md b/packages/angular/cli/commands/run-long.md
@@ -12,5 +12,5 @@ If you do so, you can run them from the command line using the `ng run` command.
 Execute the command using the following format.
 
 ```
-ng run project:target[.configuration]
+ng run project:target[:configuration]
 ```
