docs: fix broken links

Author: nodkz

docs/releases/9.0.0.md

@@ -622,9 +622,9 @@ Before 9.0.0, `graphql-compose-mongoose` would save some records provided to `cr
 
 It will not be possible to provide such great improvements in v9.0.0 without the following amazing peoples:
 
-- [Robert Lowe](https:/github.com/RobertLowe) – new improved error payload for Mutations and better validation Errors on document creating/updating.
-- [Sean Campbell](https:/github.com/natac13) – nested projection for reducing the amount of transmitted data from DB.
-- [Morgan Touverey Quilling](https:/github.com/toverux) – non-nullability for fields with default values, help in lean resolvers.
+- [Robert Lowe](https://github.com/RobertLowe) – new improved error payload for Mutations and better validation Errors on document creating/updating.
+- [Sean Campbell](https://github.com/natac13) – nested projection for reducing the amount of transmitted data from DB.
+- [Morgan Touverey Quilling](https://github.com/toverux) – non-nullability for fields with default values, help in lean resolvers.
 
 Thank you very much for your help 🙏