Fix hosted service syntax: ensure patterns have leading slash

Author: devin-ai-integration[bot]

showcases/data/Lambda/Activator - Hosted service/code.pure

@@ -14,7 +14,7 @@ function model::processData(data: String[1]): String[1]
 // Basic hosted service with UserList ownership
 HostedService model::BasicHostedService
 {
-   pattern: 'api/greet/{name}';
+   pattern: '/api/greet/{name}';
    ownership: UserList 
    {
       users: [
@@ -30,7 +30,7 @@ HostedService model::BasicHostedService
 // Hosted service with Deployment ownership and stereotypes
 HostedService <<meta::pure::profiles::doc.doc>> {doc.doc = 'Example with deployment ownership'} model::DeploymentHostedService
 {
-   pattern: 'api/process/{data}';
+   pattern: '/api/process/{data}';
    ownership: Deployment 
    {
       identifier: '12345'
@@ -43,7 +43,7 @@ HostedService <<meta::pure::profiles::doc.doc>> {doc.doc = 'Example with deploym
 // Hosted service with post-deployment actions
 HostedService model::AdvancedHostedService
 {
-   pattern: 'api/advanced/{param}';
+   pattern: '/api/advanced/{param}';
    ownership: UserList 
    {
       users: [