chore(testing): fix broken input/output link (#2638)

Author: wardbell

public/docs/ts/latest/guide/testing.jade

@@ -45,7 +45,7 @@ block includes
   1. [Test a component with an external template](#component-with-external-template)
     - [_async_](#async-in-before-each) in `beforeEach`
     - [_compileComponents_](#compile-components)
-  1. [Test a component with inputs and outputs](#component-with-inputs-outputs)
+  1. [Test a component with inputs and outputs](#component-with-input-output)
     - [_triggerEventHandler_](#trigger-event-handler)
   1. [Test a component inside a test host component](#component-inside-test-host)
   <br><br>
@@ -887,7 +887,7 @@ a(href="#top").to-top Back to top
 
 .l-hr
 
-#component-with-inputs-outputs
+#component-with-input-output
 :marked
   # Test a component with inputs and outputs
   A component with inputs and outputs typically appears inside the view template of a host component.