Correct Docker image location (#2929)

According to the CI, the location of the docker image should be `kamilkisiela/graphql-inspector` and not `graphql-hive/graphql-inspector`. The latter doesn't (yet) exist on Docker Hub, which momentarily through me for a loop when trying to integrate this Docker image into our CI pipelines.

https://github.com/graphql-hive/graphql-inspector/blob/3539940ffd6cdc7d48e2b2fb54acd8f8ec886e10/.github/workflows/docker.yml#L22

Author: veyndan

website/src/pages/docs/installation.mdx

@@ -102,17 +102,17 @@ import { diff, validate, coverage, ... } from '@graphql-inspector/core'
 GraphQL Inspector is also available on Docker.
 
 ```sh
-docker run graphql-hive/graphql-inspector --help
+docker run kamilkisiela/graphql-inspector --help
 ```
 
 Bind volumes to `/app` for working with local files, for example:
 
 ```sh
-docker run -v $PWD:/app graphql-hive/graphql-inspector graphql-inspector diff old.graphql new.graphql
+docker run -v $PWD:/app kamilkisiela/graphql-inspector graphql-inspector diff old.graphql new.graphql
 ```
 
 To run commands interactively inside of the container, use the following:
 
 ```sh
-docker run -it graphql-hive/graphql-inspector
+docker run -it kamilkisiela/graphql-inspector
 ```

website/src/pages/docs/products/ci.mdx

@@ -124,7 +124,7 @@ version: 2
 jobs:
   build:
     docker:
-      - image: graphql-hive/graphql-inspector
+      - image: kamilkisiela/graphql-inspector
     steps:
       - checkout
       - run: