Rename #2: Use new location of the template (#4230)

## Changes
Use new location of the template

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## Tests
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Author: fjakobs

experimental/aitools/cmd/init_template/app.go

@@ -17,7 +17,7 @@ import (
 
 const (
 	defaultTemplateRepo = "https://github.com/databricks/cli"
-	defaultTemplateDir  = "experimental/apps-mcp/templates/appkit" // TODO: Change to aitools/templates/appkit
+	defaultTemplateDir  = "experimental/aitools/templates/appkit"
 	defaultBranch       = "main"
 	templatePathEnvVar  = "DATABRICKS_APPKIT_TEMPLATE_PATH"
 )