Apply suggestions from code review

Co-authored-by: Tyler Yahn <[email protected]>

Author: dashpole

detectors/gcp/README.md

@@ -37,9 +37,9 @@ tp := trace.NewTracerProvider(
 ## Setting Kubernetes attributes
 
 Previous iterations of GCP resource detection attempted to detect
-container.name, k8s.pod.name and k8s.namespace.name.  When using this detector,
+`container.name`, `k8s.pod.name` and `k8s.namespace.name`.  When using this detector,
 you should use this in your Pod Spec to set these using
-OTEL_RESOURCE_ATTRIBUTES:
+`OTEL_RESOURCE_ATTRIBUTES`:
 
 ```yaml
 env:

detectors/gcp/types.go

@@ -16,7 +16,7 @@ package gcp // import "go.opentelemetry.io/contrib/detectors/gcp"
 
 import "github.com/GoogleCloudPlatform/opentelemetry-operations-go/detectors/gcp"
 
-// gcpDetector can detect attributes of GCP environments
+// gcpDetector can detect attributes of GCP environments.
 type gcpDetector interface {
 	ProjectID() (string, error)
 	CloudPlatform() gcp.Platform