docs: Minor edit to file (#708)

README.md

@@ -7,7 +7,7 @@ It provides:
 - A distributed component architecture in various languages and frameworks
 - Utilization of a variety of different persistence backends for different components like MySQL, DynamoDB and Redis
 - The ability to run in various container orchestration technologies like Docker Compose, Kubernetes etc.
-- Pre-built containers image for both x86-64 and ARM64 CPU architectures
+- Pre-built container images for both x86-64 and ARM64 CPU architectures
 - All components instrumented for Prometheus metrics and OpenTelemetry OTLP tracing
 - Support for Istio on Kubernetes
 - Load generator which exercises all of the infrastructure