[jaeger] Fix Prometheus port formatting

Signed-off-by: Chris Peterson <chris@gantline.org>

Author: Gantline

charts/jaeger/README.md

@@ -206,5 +206,5 @@ The unified Service exposes the following ports:
 - **OTLP**: 4317 (gRPC), 4318 (HTTP)
 - **Jaeger**: 14250 (gRPC), 14268 (HTTP), 6831/6832 (UDP)
 - **Zipkin**: 9411
-- **Prometheus**: 8888(HTTP), 8889(HTTP)
+- **Prometheus**: 8888 (HTTP), 8889 (HTTP)
 - Additional ports may be added via jaeger.service.extraPorts override.