chore: PR comments

Author: jinseopkim0

google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BigtableTableAdminClient.java

@@ -223,8 +223,8 @@ public String getInstanceId() {
   }
 
   /**
-   * Returns the underlying autogenerated GAPIC client. This provides access to the newest features
-   * and proto-based methods.
+   * Returns the modern autogenerated client. This provides access to the newest features and
+   * proto-based methods.
    */
   public BaseBigtableTableAdminClient getNewApi() {
     return newApi;