Rust Actix Readme correct fortune url (#5062)

Correction of a typo in fortune url in the readme.

frameworks/Rust/actix/README.md

@@ -43,7 +43,7 @@ PostgreSQL.
 
 ### Test 4: Fortunes (Template rendering)
 
-    http://localhost:8080/fortunes
+    http://localhost:8080/fortune
 
 ### Test 5: Update Query