docs(event_handler): revert deleted file (#6947)

Revert deleted file

Author: leandrodamascena

examples/event_handler_graphql/src/graphql_transformer_list_locations.json

@@ -0,0 +1,22 @@
+{
+    "typeName": "Query",
+    "fieldName": "listLocations",
+    "arguments": {
+        "page": 2,
+        "size": 1
+    },
+    "identity": {
+        "claims": {
+            "iat": 1615366261
+        },
+        "username": "treid"
+    },
+    "request": {
+        "headers": {
+            "x-amzn-trace-id": "Root=1-60488877-0b0c4e6727ab2a1c545babd0",
+            "x-forwarded-for": "127.0.0.1",
+            "cloudfront-viewer-country": "NL",
+            "x-api-key": "x"
+        }
+    }
+}