Update reply_schema details for info and hset commands json files accordingly. (#12017)

These commands had an empty description.

Co-authored-by: Oran Agra <oran@redislabs.com>

src/commands/hset.json

@@ -41,6 +41,7 @@
             }
         ],
         "reply_schema": {
+            "description": "The number of fields that were added",
             "type": "integer"
         },
         "arguments": [

src/commands/info.json

@@ -26,6 +26,7 @@
             "RESPONSE_POLICY:SPECIAL"
         ],
         "reply_schema": {
+            "description": "A map of info fields, one field per line in the form of <field>:<value> where the value can be a comma separated map like <key>=<val>. Also contains section header lines starting with `#` and blank lines.",
             "type": "string"
         },
         "arguments": [