fix interface description

Signed-off-by: Nxinking129 <xinxin13@huawei.com>

zh-cn/application-dev/reference/apis/js-apis-app-ability-errorManager.md

@@ -42,7 +42,7 @@ let observer = {
     onException(errorObj) {
         console.log('onException, name: ', errorObj.name);
         console.log('onException, message: ', errorObj.message);
-        if (typeof(errorObject.stack) === 'string') {
+        if (typeof(errorObj.stack) === 'string') {
             console.log('onException, stack: ', errorObj.stack);
         }
     }

zh-cn/application-dev/reference/apis/js-apis-inner-application-errorObserver.md

@@ -57,10 +57,10 @@ let observer = {
   onUnhandledException(errorMsg) {
     console.error('onUnhandledException, errorMsg: ', errorMsg);
   }
-  onException(errObject) {
+  onException(errorObj) {
     console.log('onException, name: ', errorObj.name);
     console.log('onException, message: ', errorObj.message);
-    if (typeof(errorObject.stack) === 'string') {
+    if (typeof(errorObj.stack) === 'string') {
         console.log('onException, stack: ', errorObj.stack);
     }
   }