Add news entry for #1018

Author: schloerke

NEWS.md

@@ -1,5 +1,11 @@
 # plumber 1.3.3
 
+## Bug fixes and minor improvements
+
+* Swagger redirects (`/__swagger__/` → `/__docs__/`) now use relative paths
+  instead of absolute paths, ensuring compatibility with various hosting
+  environments including RStudio Connect (#1016, #1018).
+
 # plumber 1.3.2
 
 ## Bug fixes and minor improvements