[tpython][nfc] Avoid Doxygen documentation errors without disturbing transient I/O mark

Author: ferdymercury

bindings/tpython/inc/TPyArg.h

@@ -49,7 +49,7 @@ class TPyArg {
    ClassDef(TPyArg, 1) // Python morphing argument type
 
 private:
-   mutable PyObject *fPyObject; //! converted C++ value as python object
+   mutable PyObject *fPyObject; ///<! converted C++ value as python object
 };
 
 #endif

bindings/tpython/inc/TPyReturn.h

@@ -59,7 +59,7 @@ class TPyReturn {
    ClassDef(TPyReturn, 1) // Python morphing return object
 
 private:
-   PyObject *fPyObject; //! actual python object
+   PyObject *fPyObject; ///<! actual python object
 };
 
 #endif