Update vendoring via vndr

gateway/vendor/github.com/docker/distribution/docs/spec/implementations.md

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-published: false
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-
-# Distribution API Implementations
-
-This is a list of known implementations of the Distribution API spec.
-
-## [Docker Distribution Registry](https://github.com/docker/distribution)
-
-Docker distribution is the reference implementation of the distribution API
-specification. It aims to fully implement the entire specification.
-
-### Releases
-#### 2.0.1 (_in development_)
-Implements API 2.0.1
-
-_Known Issues_
- - No resumable push support
- - Content ranges ignored
- - Blob upload status will always return a starting range of 0
-
-#### 2.0.0
-Implements API 2.0.0
-
-_Known Issues_
- - No resumable push support
- - No PATCH implementation for blob upload
- - Content ranges ignored
-