Update Read more sections on Results output (#1130)

* Update `Read more` sections on Results output
* Add output extension to read more

---------

Co-authored-by: Matt Dodson <[email protected]>

Author: ppcano

src/data/markdown/translated-guides/en/03 Results output/000-Overview.md

@@ -13,3 +13,9 @@ If you stream your metrics, you can either write them to a file, like JSON, or s
 
 ![A diagram of the two broad ways to handle results: aggregated and granular](./images/k6-results-diagram.png)
 
+
+## Read more
+- [End of test summary](../end-of-test)
+- [Real time results](../real-time)
+- [Ways to visualize k6 results](https://k6.io/blog/ways-to-visualize-k6-results/)
+- [Build an output extension](/extensions/get-started/create/output-extensions/)

src/data/markdown/translated-guides/en/03 Results output/200 Real-time.md

@@ -49,6 +49,5 @@ You can also stream real-time metrics to the following services:
 
 ## Read more
 
-- [k6 extensions](/extensions/get-started/explore) have many more supported file formats.
-- [Ways to visualize k6 results](https://k6.io/blog/ways-to-visualize-k6-results/). Video demonstrations with a companion blog post.
+- [Ways to visualize k6 results](https://k6.io/blog/ways-to-visualize-k6-results/)