I want to auto insert inline image for `org-plot/gnuplot` result plot below
the table. Like this:

```org
#+PLOT: title:"Citas" ind:1 deps:(3) type:2d with:histograms set:"yrange
[0:]"
| Sede      | Max cites | H-index |
|-----------+-----------+---------|
| Chile     |    257.72 |   21.39 |
| Leeds     |    165.77 |   19.68 |
| Sao Paolo |     71.00 |   11.50 |
| Stockholm |    134.19 |   14.33 |
| Morelia   |    257.56 |   17.67 |

Press =[C-c " g]= on upper table to generate gnuplot plot image (*NOTE*: the
generated plot image is in currently working directory).

#+ATTR_ORG: :width 250
#+ATTR_LATEX: :width 2.5in
#+ATTR_HTML: :width 250px
[[file:org-plot.png]]
```

I have an idea, add an advice on `org-plot/gnuplot` with a user helper
function to inser the inline image link.
This advice need to:

- locate point below the table.
- get the `org-plot/gnuplot` result plot image link.
- insert inline image link.

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