fix: bundle lint --format doesn't work properly (#406)

__tests__/bundle/bundle-lint-format/codeframe-format-snapshot.js

@@ -0,0 +1,24 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`E2E bundle lint format bundle lint: should be formatted by format: codeframe 1`] = `
+
+[1] openapi.yaml:20:11 at #/paths/~1my_post/post/requestBody/content/application~1json
+
+Expected type \`MediaType\` (object) but got \`null\`
+
+18 | requestBody:
+19 |   content:
+20 |     application/json:
+   |     ^^^^^^^^^^^^^^^^^
+21 |
+
+Error was generated by the spec rule.
+
+
+❌ Validation failed with 1 error.
+run \`openapi lint --generate-ignore-file\` to add all problems to the ignore file.
+
+bundling ./openapi.yaml...
+📦 Created a bundle for ./openapi.yaml at /tmp/null.yaml <test>ms.
+
+`;