Move some browser docs to recommended practices.

The main reason of this change is to collect recommended practices of
using k6 browser under a single menu.

We have usage examples already in the other API documents. These
examples are more like "recommended practices". Also,
"Recommended practices and examples" didn't fit the menu and become
weird like "Recommended practices an..."

Author: inancgumus

src/data/markdown/translated-guides/en/03 Using k6 browser/100 Examples.md renamed to src/data/markdown/translated-guides/en/03 Using k6 browser/100 Recommended Practices.md

@@ -1,10 +1,11 @@
 ---
-title: 'Examples'
+title: 'Recommended practices'
 excerpt: 'A list of different examples and recommended practices when working with the k6 browser module'
 ---
 
 This section presents some examples and recommended practices when working with the `k6 browser` module to leverage browser automation as part of your k6 tests.
 
-- [Page object model pattern](/using-k6-browser/examples/page-object-model)
+- [Page object model pattern](/using-k6-browser/recommended-practices/page-object-model)
+- [Selecting elements](/using-k6-browser/recommended-practices/selecting-elements)