Merge pull request #1 from fanquake/patch-1

Correct link to gitian bitcoin host container

docker/gitian-host/README.md

@@ -54,7 +54,7 @@ This will create a privileged running container that you can access with the SSH
 
 Derived images
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-A [bitcoin gitian host container](../gitian-bitcoin/host/README.md) is available.
+A [bitcoin gitian host container](../gitian-bitcoin-host/README.md) is available.
 
 Credits
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