update docs

Signed-off-by: Nshawn_he <shawn.he@huawei.com>

en/application-dev/reference/apis/js-apis-radio.md

@@ -408,7 +408,7 @@ Checks whether the current device supports 5G \(NR\).
 ```js
 let slotId = 0;
 let result = radio.isNrSupported(slotId);
-console.log(result);
+console.log("result is "+ result);
 ```
 
 

en/application-dev/reference/apis/js-apis-sim.md

@@ -521,7 +521,7 @@ Obtains the number of card slots.
 **Example**
 
 ```js
-console.log(sim.getMaxSimCount())
+console.log("the result is "+sim.getMaxSimCount())
 ```