Merge pull request containerd#616 from AkihiroSuda/fix-vv-links

nerdctl-full/README.md: fix dead links

Author: AkihiroSuda

Dockerfile

@@ -187,9 +187,9 @@ RUN fname="go-ipfs_${IPFS_VERSION}_${TARGETOS:-linux}-${TARGETARCH:-amd64}.tar.g
 
 RUN echo "" >> /out/share/doc/nerdctl-full/README.md && \
   echo "## License" >> /out/share/doc/nerdctl-full/README.md && \
-  echo "- bin/slirp4netns:    [GNU GENERAL PUBLIC LICENSE, Version 2](https://github.com/rootless-containers/slirp4netns/blob/v${SLIRP4NETNS_VERSION}/COPYING)" >> /out/share/doc/nerdctl-full/README.md && \
-  echo "- bin/fuse-overlayfs: [GNU GENERAL PUBLIC LICENSE, Version 3](https://github.com/containers/fuse-overlayfs/blob/v${FUSE_OVERLAYFS_VERSION}/COPYING)" >> /out/share/doc/nerdctl-full/README.md && \
-  echo "- bin/ipfs: [Combination of MIT-only license and dual MIT/Apache-2.0 license](https://github.com/ipfs/go-ipfs/blob/v${IPFS_VERSION}/LICENSE)" >> /out/share/doc/nerdctl-full/README.md && \
+  echo "- bin/slirp4netns:    [GNU GENERAL PUBLIC LICENSE, Version 2](https://github.com/rootless-containers/slirp4netns/blob/${SLIRP4NETNS_VERSION}/COPYING)" >> /out/share/doc/nerdctl-full/README.md && \
+  echo "- bin/fuse-overlayfs: [GNU GENERAL PUBLIC LICENSE, Version 3](https://github.com/containers/fuse-overlayfs/blob/${FUSE_OVERLAYFS_VERSION}/COPYING)" >> /out/share/doc/nerdctl-full/README.md && \
+  echo "- bin/ipfs: [Combination of MIT-only license and dual MIT/Apache-2.0 license](https://github.com/ipfs/go-ipfs/blob/${IPFS_VERSION}/LICENSE)" >> /out/share/doc/nerdctl-full/README.md && \
   echo "- bin/runc (Apache License 2.0) is statically linked with libseccomp ([LGPL 2.1](https://github.com/seccomp/libseccomp/blob/main/LICENSE))" >> /out/share/doc/nerdctl-full/README.md && \
   echo "- Other files: [Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0)" >> /out/share/doc/nerdctl-full/README.md && \
   (cd /out && find ! -type d | sort | xargs sha256sum > /tmp/SHA256SUMS ) && \