Update application-startup.md

[IvetNikolova]

No description provided.

[ighristov]

The textual content is fine, but the screenshots need refactoring. Please check my comments.

[ighristov]

The content is not centered and there's too much space on the sides. For such scenarios I'd recommend to resize the browser window - something like this:

Please ensure that all the text is visible with the selected browser window size, and decrease the page zoom to 90, if needed.
For consistency and sense of continuity, use the same resolution for all screenshots in the article. Ensure the common elements like the black header, are present in all the screenshots.

[ighristov]

Here the black header is invisible and the screenshot seems detached from the startup workflow.

[ighristov]

Different resolution than the other screenshots, too much space on both sides, not enough space at the bottom.