Add another translate test to mrllmtests

Author: rowanseymour

cmd/mrllmtests/data/tests.json

@@ -1,4 +1,16 @@
 [
+    {
+        "description": "Translate single word from English to Spanish",
+        "template": "translate",
+        "data": {
+            "FromLanguage": "eng",
+            "ToLanguage": "spa"
+        },
+        "input": "Hello",
+        "expected_output": [
+            "Hola"
+        ]
+    },
     {
         "description": "Translate from English to Spanish with simple variable expression",
         "template": "translate",