Change links from google.github.io/guava to guava.dev, including making sure they're https.
The links work even now because they automatically redirect.
<detectJavaApiLink>false</detectJavaApiLink>
<links>
<!-- TODO(cpovirk): Link to the version that we depend on? -->
- <link>https://google.github.io/guava/releases/snapshot-jre/api/docs</link>
+ <link>https://guava.dev/releases/snapshot-jre/api/docs</link>
<link>https://developers.google.com/protocol-buffers/docs/reference/java</link>
<link>https://junit.org/junit4/javadoc/latest/</link>
<link>https://docs.oracle.com/javase/7/docs/api/</link>
