Fix Node.js Realm import example (#3053)

## Pull Request Info

### Review Guidelines


[REVIEWING.md](https://github.com/mongodb/docs-realm/blob/master/REVIEWING.md)

Author: krollins-mdb

source/sdk/node/install.txt

@@ -147,5 +147,7 @@ Import Realm
 Add the following line to the top of your source files (JavaScript or TypeScript) where
 you want to use Realm:
 
-.. literalinclude:: /examples/generated/node/quickstart.snippet.import-realm.ts
-   :language: javascript
+.. code-block:: javascript
+
+   import Realm from "realm";
+