docs(readme): update Fosshost.org logo location

[szemek]

Description

• in README.md replace https://fosshost.org/img/FosshostLogo.png with https://fosshost.org/img/fosshost-logo.png as previous location no longer exists (page returns 404 error)

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation
• Chore (Related to CI or Packaging to platforms)

[profclems]

@szemek thanks a lot!

[codecov]

Codecov Report

Merging #851 (d41bb60) into trunk (5cb2858) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##            trunk     #851   +/-   ##
=======================================
  Coverage   59.42%   59.42%           
=======================================
  Files          93       93           
  Lines        7366     7366           
=======================================
  Hits         4377     4377           
  Misses       2607     2607           
  Partials      382      382           

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