Improve text on device selection

Co-authored-by: Joshua Bell <[email protected]>

index.bs

@@ -669,7 +669,7 @@ Unlike WebGPU, this API does not intrinsically support custom shader authoring;
 
 The WebGPU API identifies <a href="https://gpuweb.github.io/gpuweb/#privacy-machine-artifacts">machine-specific artifacts</a> as a privacy consideration. Similarly, the WebNN API's compute unit scheduling may under certain circumstances introduce a fingerprint. However, similarly to WebGPU, such fingerprints are identical across most or all of the devices of each vendor, mitigating the concern. Furthermore, software implementations can be used to further eliminate such artifacts.
 
-The WebNN API defines developer-settable preferences to help inform [[#programming-model-device-selection]] and allow the implementation to better select the most appropriate underlying execution device for the workload. An {{MLPowerPreference}} indicates preference as related to the desired low power consumption or high performance, is considered a hint only and as such does not increase entropy of the fingerprint.
+The WebNN API defines developer-settable preferences to help inform [[#programming-model-device-selection]] and allow the implementation to better select the most appropriate underlying execution device for the workload. An {{MLPowerPreference}} indicates a preference as related to the desired low power consumption or high performance; this is considered a hint only and as such does not increase entropy of the fingerprint.
 
 Issue(623): {{MLContextOptions}} is under active development, and the design is expected to change, informed by further implementation experience and new use cases from the wider web community.