Update jq page with correct command format

pages/common/jq.md

@@ -9,7 +9,7 @@
 
 - Output all elements from arrays (or all key-value pairs from objects) in a JSON file:
 
-`jq .[] {{file.json}}`
+`jq '.[]' {{file.json}}`
 
 - Read JSON objects from a file into an array, and output it (inverse of `jq .[]`):
 
@@ -17,11 +17,11 @@
 
 - Output the first element in a JSON file:
 
-`jq .[0] {{file.json}}`
+`jq '.[0]' {{file.json}}`
 
 - Output the value of a given key of the first element in a JSON text from `stdin`:
 
-`cat {{file.json}} | jq .[0].{{key_name}}`
+`cat {{file.json}} | jq '.[0].{{key_name}}'`
 
 - Output the value of a given key of each element in a JSON text from `stdin`: