Update Modular CRM docs: HTTP clients & links

Register AddHttpClientProxies for ModularCrmContractsModule and CatalogContractsModule alongside OrderingContractsModule in the client module example, and add a clarifying comment. Remove a Blazor WebApp placeholder screenshot reference in part-05. Update the download link in part-08 to point to the ModularCRM-BlazorWebApp sample repository. These changes align the docs with the Blazor WebApp sample and ensure required HTTP client proxies are shown.

docs/en/tutorials/modular-crm/part-05.md

@@ -381,7 +381,10 @@ public class ModularCrmClientModule : AbpModule
 {
     public override void ConfigureServices(ServiceConfigurationContext context)
     {
-        context.Services.AddHttpClientProxies(typeof(OrderingContractsModule).Assembly);
+        ...
+        context.Services.AddHttpClientProxies(typeof(ModularCrmContractsModule).Assembly);
+        context.Services.AddHttpClientProxies(typeof(CatalogContractsModule).Assembly);
+        context.Services.AddHttpClientProxies(typeof(OrderingContractsModule).Assembly); // NEW: ADD HttpClientProxies
     }
 }
 ````
@@ -519,7 +522,6 @@ public class OrderingMenuContributor : IMenuContributor
 {{else if UI == "BlazorWebApp"}}
 
 Replace the `Index.razor` content in the `Pages/Ordering` folder of the `ModularCrm.Ordering.Blazor` project with the following code block:
-> Blazor WebApp placeholder screenshot file: `images/vscode-ordering-index-razor-blazor-webapp.png`
 
 ````razor
 @page "/ordering"

docs/en/tutorials/modular-crm/part-08.md

@@ -176,7 +176,7 @@ Now, you know the fundamental principles and mechanics of building sophisticated
 
 ## Download the Source Code
 
-You can download the completed sample solution [here](https://github.com/abpframework/abp-samples/tree/master/ModularCRM).
+You can download the completed sample solution [here](https://github.com/abpframework/abp-samples/tree/master/ModularCRM-BlazorWebApp).
 
 ## See Also