Fix path pointing to posgresql/README.md file (#2)

* Fix path to README.md file

* Fix path, take 2

Author: satrapu

README.md

@@ -7,4 +7,4 @@ The Docker images below support Linux and Windows hosts and have built-in health
 
 | Image                | Tags                                                      | Docs                            | Latest                                                                            | Build status                                                                                                                  |
 | -------------------- | --------------------------------------------------------- | ------------------------------- | --------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------- |
-| `satrapu/postgresql` | [Docker Hub](https://hub.docker.com/r/satrapu/postgresql) | [README.md](postgres/README.md) | ![Latest version](https://img.shields.io/docker/v/satrapu/postgresql?sort=semver) | ![GitHub Workflow Status](https://img.shields.io/github/workflow/status/satrapu/postgresql-docker-images/publishDockerImages) |
+| `satrapu/postgresql` | [Docker Hub](https://hub.docker.com/r/satrapu/postgresql) | [README.md](postgresql/README.md) | ![Latest version](https://img.shields.io/docker/v/satrapu/postgresql?sort=semver) | ![GitHub Workflow Status](https://img.shields.io/github/workflow/status/satrapu/postgresql-docker-images/publishDockerImages) |