📝 Update jq cheatsheet with usage examples

jq/CHEATSHEET.md

@@ -8,3 +8,14 @@ repo: https://github.com/jqlang/jq
 description: Command-line JSON processor
 ```
 
+## Usage
+
+```shell
+echo '{"name": "hatter"}' | jq .
+```
+
+```shell
+echo '{"name": "hatter"}' | jq .name -r
+```
+
+