docs: correct container image reference to dockerhub (#3219)

Signed-off-by: UtkarshUmre <112888849+UtkarshUmre@users.noreply.github.com>

docs/docs/contribute/software/dev-environ.md

@@ -99,7 +99,7 @@ you need to install the following on your system:
  You identify your private repository with the `RELEASE_REGISTRY=` argument
  and can add any `TAG` arguments you like.
  For example, the following command builds the environment
- and pushes the image to the `docker.io/exampleuser` GitHub repository:
+ and pushes the image to the `docker.io/exampleuser` DockerHub repository:
 
 ```shell
 make build-deploy-dev-environment RELEASE_REGISTRY=docker.io/exampleuser TAG=main