docs: fix readme logo file path (zitadel#11628)

# Which Problems Are Solved

The readme file is using the wrong path for the zitadel logo and
oidc-cert file.

<img width="1252" height="415" alt="Screenshot 2026-02-18 at 15 15 07"
src="https://github.com/user-attachments/assets/dc0dbe79-58fe-4695-ac01-6130b0e8441e"
/>

PR zitadel#11166 changed the README path from `./docs/static/logos/` to
`./apps/docs/static/logos/`. However, that same commit actually moved
the file to `apps/docs/public/img/logos/` — the README update used the
wrong destination path.

# How the Problems Are Solved

- Replace image path with the correct one.

# Additional Changes

n/a

# Additional Context

n/a

Author: vitorbari

README.md

@@ -1,6 +1,6 @@
 <p align="center">
-    <img src="./apps/docs/static/logos/zitadel-logo-dark@2x.png#gh-light-mode-only" alt="Zitadel Logo" max-height="200px" width="auto" />
-    <img src="./apps/docs/static/logos/zitadel-logo-light@2x.png#gh-dark-mode-only" alt="Zitadel Logo" max-height="200px" width="auto" />
+    <img src="./apps/docs/public/img/logos/zitadel-logo-dark@2x.png#gh-light-mode-only" alt="Zitadel Logo" max-height="200px" width="auto" />
+    <img src="./apps/docs/public/img/logos/zitadel-logo-light@2x.png#gh-dark-mode-only" alt="Zitadel Logo" max-height="200px" width="auto" />
 </p>
 
 <p align="center">
@@ -27,7 +27,7 @@
 
 <p align="center">
     <a href="https://openid.net/certification/#OPs" alt="OpenID Connect Certified">
-        <img src="./apps/docs/static/logos/oidc-cert.png" /></a>
+        <img src="./apps/docs/public/img/logos/oidc-cert.png" /></a>
 </p>
 
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