Fix list items in README (#518)

README.md

@@ -57,7 +57,7 @@ You can also run the samples in Docker (see below).
 
 1. Update `Startup.cs`'s `ConfigureDevelopmentServices` method as follows:
 
-```
+    ```csharp
     public void ConfigureDevelopmentServices(IServiceCollection services)
     {
         // use in-memory database
@@ -114,6 +114,7 @@ You should be able to make requests to localhost:5106 for the Web project, and l
 You can also run the applications by using the instructions located in their `Dockerfile` file in the root of each project. Again, run these commands from the root of the solution (where the .sln file is located).
 
 ## Community Extensions
+
 We have some great contributions from the community, and while these aren't maintained by Microsoft we still want to highlight them.
 
 [eShopOnWeb VB.NET](https://github.com/VBAndCs/eShopOnWeb_VB.NET) by Mohammad Hamdy Ghanem