Update ROADMAP.md

Author: ashitaprasad

ROADMAP.md

@@ -12,7 +12,7 @@
 - [x] GraphQL support (https://github.com/foss42/apidash/issues/117)
 - [ ] gRPC support (https://github.com/foss42/apidash/issues/14)
 - [ ] Figuring out how to build for various Linux packaging formats (https://github.com/foss42/apidash/discussions/240) [Docs]
-- [ ] Save items in Response headers/body in an Environment variable to be used by other requests (https://github.com/foss42/apidash/issues/465)
+- [ ] Save items in Response headers/body in an Environment variable to be used by other requests. Something like a post-processing script. (https://github.com/foss42/apidash/issues/465)
 - [ ] Importers
   - [ ] OpenAPI (https://github.com/foss42/apidash/issues/121)
   - [ ] Insomnia (https://github.com/foss42/apidash/issues/125)