fix: Autocoders: finishPortH.tmpl, clerical error (#875)

The template "finishPortH.tmpl" for creating the last part of "[xx]PortAc.hpp", has an obvious comment error. It is not a functional error, but better to be corrected as well.

as an example:

The CyclePortAc.hpp likes this:
```
    /// Input Cycle port description
    /// 
    
    class OutputCyclePort : public Fw::OutputPortBase {
      public: 
        OutputCyclePort(void);
```

--->

```
    /// Output Cycle port description
    /// 
    
    class OutputCyclePort : public Fw::OutputPortBase {
      public: 
        OutputCyclePort(void);
```

Autocoders/Python/src/fprime_ac/generators/templates/port/finishPortH.tmpl

@@ -1,4 +1,4 @@
-    /// Input $name port description
+    /// Output $name port description
     /// $desc
 
     class Output${name}Port : public Fw::OutputPortBase {