chore: update solid-ai-templates submodule URL

Repo transferred from Imbra-Ltd to braboj.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: braboj

.gitmodules

@@ -1,3 +1,3 @@
 [submodule "docs/solid-ai-templates"]
 	path = docs/solid-ai-templates
-	url = https://github.com/Imbra-Ltd/solid-ai-templates.git
+	url = https://github.com/braboj/solid-ai-templates.git