Update Jaeger metadata

Signed-off-by: landscape-pr[bot] <projects@cncf.io>

Author: landscape-pr[bot]

landscape.yml

@@ -11609,6 +11609,7 @@ landscape:
             logo: jaeger.svg
             twitter: https://twitter.com/JaegerTracing
             crunchbase: https://www.crunchbase.com/organization/cloud-native-computing-foundation
+            description: "Jaeger: open source, end-to-end distributed tracing. Monitor and troubleshoot transactions in complex distributed systems"
             extra:
               lfx_slug: jaeger
               accepted: '2017-09-13'