Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.

.avia_textblock.shape.pentagon img.alignright {
  -webkit-clip-path: polygon(50% 0%,100% 38%,82% 100%,18% 100%,0% 38%);
  clip-path: polygon(50% 0%,100% 38%,82% 100%,18% 100%,0% 38%);
  shape-outside: polygon(47.61% 2.21%, 99.84% 36.74%, 83.09% 100%, 25.68% 99.97%, 8.46% 36.59%);
  float: right;
  margin: 0 0 30px 120px;
}

On DEV Tools of your browser – it is possible to activate the path/polygone etc.
– then you can pull the points to the wanted position ( this has only inside the margin an effect)

afterwards – copy edited results of the given changes to your quick css