removed 1.9.0 as stable version

Author: schwzr

docs/src/operations/old-versions.md

@@ -1,8 +1,14 @@
 ---
-title: Old versions
+title: Old Versions
 icon: launch
 ---
 
+## DSF v2
+
+- [2.0.1](./v2.0.1/)
+- [2.0.0](./v2.0.0/)
+
+
 ## DSF v1
 
 - [1.9.0](./v1.9.0/)

docs/src/operations/v1.9.0/index.md

@@ -3,7 +3,7 @@ title: DSF 1.9.0
 icon: guide
 ---
 
-Data Sharing Framework 1.x is the current major release of the Data Sharing Framework.
+Data Sharing Framework 1.x is the latest release of major version 1 of the Data Sharing Framework.
 
 # System Administrators