[#27] Stop using obsolete .github directory

This commit is a part of multi-repo cleanup effort:
TrueCloudLab/frostfs-infra#136

Signed-off-by: Vitaliy Potyarkin <v.potyarkin@yadro.com>

README.md

@@ -1,5 +1,5 @@
 <p align="center">
-<img src="./.github/logo.svg" width="500px" alt="FrostFS logo">
+<img src="./.forgejo/logo.svg" width="500px" alt="FrostFS logo">
 </p>
 <p align="center">
   FrostFS Documentation site