Apply documentation suggestions from Andrew's code review

Co-authored-by: Andrew Lock <[email protected]>

Author: anna-git

docs/development/Configuration/AddingConfigurationKeys.md

@@ -38,7 +38,7 @@ Two source generators read these files at build time:
 
 ### 1. Add the Configuration Key Definition
 
-Add your new configuration key to `tracer/src/Datadog.Trace/Configuration/supported-configurations.json`.
+Add your new configuration key to `tracer/src/Datadog.Trace/Configuration/supported-configurations.json`, specifying an arbitrary version string (e.g. `"A"`, as shown below). and specifying the product if required.
 
 **Example:**
 ```json
@@ -119,7 +119,7 @@ If you need to explicitly control the constant name (e.g., for backward compatib
 
 ### 5. Build to Generate Code
 
-Build the `Datadog.Trace` project to run the source generator:
+Build the `Datadog.Trace` project to run the source generator, either using Nuke or by building the project directly from the command line or your IDE:
 
 ```bash
 # From repository root