add more error message example
@@ -303,6 +303,7 @@ If CuPy does not work at all with ``CompileException``, it is possible that CuPy
The followings are error messages commonly observed in such case.
* ``nvrtc: error: failed to load builtins``
+* ``catastrophic error: cannot open source file "cuda_fp16.h"``
* ``error: cannot overload functions distinguished by return type alone``
* ``error: identifier "__half_raw" is undefined``
