Preparing relase 1.21.1
Changes by Version
==================
+1.21.1 (2020-11-19)
+
+* Update UI documentation link if is present ([#1290](https://github.com/jaegertracing/jaeger-operator/pull/1290), [@rubenvp8510](https://github.com/rubenvp8510))
+
1.21.0 (2020-11-17)
-------------------
