Docs: Organize and edit the LogQL section (grafana#4342)

* Docs: Organize and edit the LogQL section

* Update docs/sources/logql/metric_queries.md

Co-authored-by: Danny Kopping <[email protected]>

Co-authored-by: Danny Kopping <[email protected]>

Author: KMiller-Grafana

docs/sources/logql/_index.md

@@ -1,6 +1,6 @@
 ---
 title: Matching IP addresses
-weight: 30
+weight: 40
 ---
 
 # Matching IP addresses