docs(quickstart): fix misplaced close paren

Author: d-s

public/docs/ts/latest/quickstart.jade

@@ -115,7 +115,7 @@ a(id="package-json")
 
   :marked
     We execute most npm scripts in the following way: `npm run` + *script-name*. 
-    Some commands (such as `start` don't require the `run` keyword).
+    Some commands (such as `start`) don't require the `run` keyword.
 
     Here's what these scripts do: