fix: standardize world name in multi-file packaging example

Update world name from 'multi-file-service' to 'service' for consistency
between the WIT definition and BUILD.bazel configuration.

This ensures the world attribute in wit_library matches the actual
world name defined in the WIT file.

Author: avrabe

examples/multi_file_packaging/BUILD.bazel

@@ -26,7 +26,7 @@ wit_library(
     name = "web_service_interfaces",
     package_name = "example:[email protected]",
     srcs = ["wit/web_service.wit"],
-    world = "multi-file-service",
+    world = "service",
 )
 
 # Generate keys for signing examples
@@ -353,7 +353,7 @@ genrule(
     cp $(location :production_config) service/
     cp $(location :response_template) service/
     cp $(location :api_schema) service/
-    cp $(location :service_documentation) service/
+    cp $(locations :service_documentation) service/
     tar -cf $@ service/
     """,
 )

examples/multi_file_packaging/wit/web_service.wit

@@ -52,6 +52,6 @@ interface web-service {
 }
 
 /// World for multi-file packaging examples
-world multi-file-service {
+world service {
     export web-service;
 }