RHIDP-4802 - Dynamic plugin: Document how users can add middleware functions to proxy backend

Author: Gerry-Forde

modules/dynamic-plugins/con-overriding-core-backend-services.adoc

@@ -1,11 +1,11 @@
 [id="overriding-core-backend-services_{context}"]
 = Overriding Core Backend Service Configuration
 
-The {product} ({product-very-short}) backend platform consists of a number of core services that are well encapsulated.  The {product-very-short} backend installs these default core services statically during initialization. 
+The {product} ({product-very-short}) backend platform consists of a number of core services that are well encapsulated. The {product-very-short} backend installs these default core services statically during initialization. 
 
 You can configure these core services by customizing the backend source code and rebuilding your {product-short} application. Alternatively, you can customize a core service by installing it as a `BackendFeature` by using dynamic plugin functionality.
 
-To use dynamic plugin functionality to customize a core service in your RHDH application, you must configure the backend to avoid statically installing a given default core service
+To use the dynamic plugin functionality to customize a core service in your RHDH application, you must configure the backend to avoid statically installing a given default core service.
 
 For example, adding a middleware function to handle all incoming requests can be done by installing a custom `configure` function for the root `HTTP` router backend service which allows access to the underlying Express application.