docs(ref/js): add missing examples

spec/supabase_js_v2.yml

@@ -972,6 +972,40 @@ functions:
             .from('countries')
             .select()
           ```
+        data:
+          sql: |
+            ```sql
+            create table
+              countries (id int8 primary key, name text);
+
+            insert into
+              countries (id, name)
+            values
+              (1, 'Afghanistan'),
+              (2, 'Albania'),
+              (3, 'Algeria');
+            ```
+        response: |
+          ```json
+          {
+            "data": [
+              {
+                "id": 1,
+                "name": "Afghanistan"
+              },
+              {
+                "id": 2,
+                "name": "Albania"
+              },
+              {
+                "id": 3,
+                "name": "Algeria"
+              }
+            ],
+            "status": 200,
+            "statusText": "OK"
+          }
+          ```
       - id: selecting-specific-columns
         name: Selecting specific columns
         code: |
@@ -980,6 +1014,37 @@ functions:
             .from('countries')
             .select('name')
           ```
+        data:
+          sql: |
+            ```sql
+            create table
+              countries (id int8 primary key, name text);
+
+            insert into
+              countries (id, name)
+            values
+              (1, 'Afghanistan'),
+              (2, 'Albania'),
+              (3, 'Algeria');
+            ```
+        response: |
+          ```json
+          {
+            "data": [
+              {
+                "name": "Afghanistan"
+              },
+              {
+                "name": "Albania"
+              },
+              {
+                "name": "Algeria"
+              }
+            ],
+            "status": 200,
+            "statusText": "OK"
+          }
+          ```
       - id: query-foreign-tables
         name: Query foreign tables
         description: |
@@ -995,6 +1060,54 @@ functions:
               )
             `)
           ```
+        data:
+          sql: |
+            ```sql
+            create table
+              countries (id int8 primary key, name text);
+            create table
+              cities (
+                id int8 primary key,
+                country_id int8 not null references countries,
+                name text
+              );
+
+            insert into
+              countries (id, name)
+            values
+              (1, 'Germany'),
+              (2, 'Indonesia');
+            insert into
+              cities (id, country_id, name)
+            values
+              (1, 2, 'Bali'),
+              (2, 1, 'Munich');
+            ```
+        response: |
+          ```json
+          {
+            "data": [
+              {
+                "name": "Germany",
+                "cities": [
+                  {
+                    "name": "Munich"
+                  }
+                ]
+              },
+              {
+                "name": "Indonesia",
+                "cities": [
+                  {
+                    "name": "Bali"
+                  }
+                ]
+              }
+            ],
+            "status": 200,
+            "statusText": "OK"
+          }
+          ```
       - id: query-foreign-tables-through-a-join-table
         name: Query foreign tables through a join table
         code: |