Remove \n from bot:peek workflow (#511)

* Remove \n from script

* Update .github/workflows/post_peek_screenshot.yml

Co-authored-by: David Leal <halfpacho@gmail.com>

Co-authored-by: David Leal <halfpacho@gmail.com>

Author: Thomas-Boi

.github/workflows/post_peek_screenshot.yml

@@ -47,7 +47,7 @@ jobs:
         if: success()
         env:
           OVERVIEW_IMG_MARKDOWN: ${{ fromJSON(steps.icons_overview_img_step.outputs.markdown_urls)[0] }}
-          DETAILED_IMGS_MARKDOWN: ${{ join(fromJSON(steps.icons_detailed_img_step.outputs.markdown_urls), '\n') }}
+          DETAILED_IMGS_MARKDOWN: ${{ join(fromJSON(steps.icons_detailed_img_step.outputs.markdown_urls), '') }}
           MESSAGE: |
             Hi there,